@CMC Scootaloo  
You might want to take cheeze’s point to heart.

@cheezedoodle  
@soundtea
 
That’s two people in a row starting their comment with “Dude” when answering to one of my comments now.  
That never happened before. I’m breaking records here!

@CMC Scootaloo  
Dude.
 
Learn to make concise points, not giant teal deers.

@CMC Scootaloo  
Dude, I think you should take your own advice about obsessing over characters and direct it toward your obsession over other fans.

@Starswirl
 
“They” are everywhere, I can’t give you concrete names, because I don’t remember all of them with as bad as my memory tends to be often. Just keep your eyes open at places (especially when reading older comments) and you will sooner or later see all the butthurt, the harassers, the demanders ect.
 
Another reason for the complaints about Starlight getting roles that I didn’t really mention yet, only hinted on, is simply that certain fans obsess too much over certain characters.  
They obsess over them so much that, every time they are out of the spotlight or put into the background for the sake of another character (or even defeated by a villain, OH MY!), they see this as insult for their beloved characters.  
That it makes perfectly sense for the plot is something that doesn’t even come to them or they don’t care about, it’s just “The Mane Six were defeated by Chrysalis, that finale sucks!” all the time.  
Or it’s worse, they don’t even see how it benefits the plot because they can’t cope with their favourite characters being out of the picture and start to imagine things.  
Such people exist as well, one particular individual on EQD that I saw shortly after the Finale aired (whose name I don’t remember either), even went as far to say he’s going to stop watching the show now, because the heroes in the Finale were Starlight, Trixie, Discord and Thorax, rather than the Mane Six.  
Character obsession is definitely another reason for that hate Starlight receives, rather than the remaints of the initial hate she got after the Season 5 Finale.
 
And since you asked me for names, there are at least two I can tell you, one even relating to Starlight.  
There is Sidral Mundet, who cheered about Starlight first and also even said that he hopes we would finally get a recurring villain. Then we got that, but suddenly, he reacted with disgust about Starlight and started to complain after the Season 5 Opener.  
I had no clue why, asked him, his answer was just cryptically “But not this way, that’s not how I imagined it!” and that was all he said.  
It was only a short time ago, after the Season 6 Finale, that a comment by him made me realize why he started to hate Starlight Glimmer, even though she was the villain he always wanted to have:
 
Because she pushed the Mane Six away. He hated her after the Season 5 Opener because she upstaged the Mane Six and defeated them so easily and because it technically weren’t the Mane Six that saved the day, but rather the citizens of Starlight’s village.  
I don’t know anything about him harassing or attacking the writers of the show because of that, but you can see him being very vocal about this on EQD and even saying that there’s literally no value to the show anymore if the Mane Six get cast aside for the sake of other characters getting built up, because he can’t cope with the Mane Six not being the shining stars in an episode.
 
Then there’s Dr. Forester, who is a regular on EQD. If you frequent there, you probably heard of him. He’s complaining and moaning about Celestia not getting big and epic, shiny roles since at least Season 4.  
If he criticizes a two-parter, then it all comes down to “Meh, Celestia didn’t mop the floor with the villain, that episode is awful!”.  
He hated the Season 4 Finale and that all for the “reason” that it was Twilight who kept the alicorn magic safe and fought Tirek with it in the end, not Celestia. He was even bitching about this like the world just ended and accused Meghan McCarthy of only having tailored the plot of the episode around that one fight, all because he was salty that Celestia wasn’t the one fighting. Those comments are still preserved on EQD, if you want to go back and look for them.  
But he did not only that, he actively tried to talk the S4 Finale down by igniting discussions with other users where he actively tried to talk into other people’s heads that the Finale sucks, with all sorts of absurd arguments, probably in hope to get some momentum against the Season 4 Finale going in the naive belief it would provoke a reaction by Meghan McCarthy and get her to write some epic stuff for Celestia or something.  
Which sadly worked for quite a few people, because he has that strange rhetoric ability of convincing people of his belief when talking to them, even if his belief does make literally no sense, so he essentially turned around quite a few people who used to love the Finale before his intervention. Unfortunately, the Season 4 Finale got quite some bad reputation because of him.  
He later toned down the Celestia complaints when people got annoyed by it and when some looked through his schemes and began to give him flak for this, so he switched to complaining about how Twilight’s friends didn’t really do anything in the S4 Finale, but essentially still continued to talk the episode down because Celestia didn’t do what he wanted her to do.  
Since then, complaining about the Mane Six not doing anything has sort of become his main strategy to talk episodes down when he didn’t get his Celestia fix from them, but you still see him ranting about Celestia directly on occasion.
 
Fanatic character obsession is a huge thing and a huge problem in this fandom, that’s something I came to realize since Season 6 ended. There are quite a few bronies who see this show as a competition between characters, instead of valueing it for, you know, its general entertainment factor, and who refuse to see the whole picture of it.  
Very often this lead to episodes/comic issues getting tons of unfair criticism and plot misinterpretations, because those bronies narrow-mindedly focus on their favourite character(s) instead of seeing the whole.  
This is something that can’t just be explained away by saying “It’s just opinions”, that’s an issue that reaches a lot deeper than that. It’s nothing to take lightly.

@soundtea  
All of them, though? In a matter of days at most? With nopony noticing anything? From enemies we’ve seen them beat up by the hundreds before, not counting Celestia, Luna, Cadance, Shining Armor, heck even Sunburst? And that’s on top of the the fact that Sunburst had time to send Thorax (and only Thorax) away with a warning about the Changelings, but not enough time to do literally anything else?

@Starswirl  
To be fair sneak crits are OP in just about every game with stealth.
 
Being a supremely powerful mage doesn’t mean jack if you got your head cracked while eating dinner with your guard completely down.

@soundtea  
Starlight was fun in the episode. We got to see some payoff to her insecurities and issues. We got to see her grow as a character. It was cathartic. It really worked well. I don’t mind Starlight in the season ender at all.
 
That every other significant and/or powerful character outside of Starlight’s cabal had to be taken out first in an extremely clumsy and downright humiliating way, on the other hoof…

@CMC Scootaloo  
I like Starlight.
 
I hate how she gets so abruptly shoved into the spotlight in this comic by suddenly making everyone stupid and incompetent. In the S6 finale she had a team that helped her rise above her insecurites.

@CMC Scootaloo  
Who are “they”? I’m willing to give you the benefit of the doubt and assume you’re not talking about all people who have criticism of Starlight’s character or the way she’s been handled. Because that would be very close-minded. You’d be closing yourself off to what could very well be valid concerns.

@Background Pony #E80E
 
Their reasons don’t matter all that much, in the end it comes down to the same:
 
They hate Starlight, they prefer other characters. They want those other characters getting the spotlight and saving the day, not Starlight. Starlight saves the day anyway, they get angry about it. They start to complain about this and some even go so far to harass/insult/attack the writers in any capacity. They are unable of accepting that, sometimes, they can’t get what they want and their favourite characters have to take a backseat for characters they like less or even hate.  
Regardless the reason, it is very immature behavior to expect and even demand that your favourite characters should always be pushed into the spotlight and that characters you don’t like should always get the shaft and be hidden in minor roles. Especially if this immaturity leads to outbursts like the ones I mentioned above.  
Sitting down and doing a bit of self-reflection would definitely do them good.

@CMC Scootaloo  
You are still basically just claiming that even if people voice other complaints about Starlight, it’s actually in their minds (as in you put it like you can tell what they think) about still wanting justice for S5 finale. Every single time, without exception. That and Starlight being a spotlight-hog is hardly the only complaint people have voiced about her before this comic arc (or to much lesser extent, the S6 finale). Sounds like you are still just making assumptions that best fit your narrative that everyone who has bigger or smaller problems with her must be donwright unreasonable as a person.

@CMC Scootaloo  
I actually thought she was handled well in S6. It’s this comic that screws it up by blatantly putting her on the spotlight and plot devicing literally everyone else into being out of commission. One of the nice things about the S6 finale was that Starlight started out as afraid as hell of being a true leader again. It took Trixie and Thorax’s encouragement over the episode for her to take charge and rise up. Which felt pretty natural.
 
Protip: Painting the opposing side as a complete wall of idiots and people who know they are wrong actually makes you look like the self-hating sad person.

@Starswirl
 
It’s all just based on experience. The complaints against Starlight started after the Season 5 Finale, because many people couldn’t put themselves into her horseshoes and were unable to relate to her and her suffering in the past after Sunburst left her, since they either never experienced such a thing happening to themselves or because they did, but had more luck than Starlight afterwards or were more mentally stable than she is.  
So they thought her actions are inexcusable and expected punishment for her, but that didn’t happen, so they got disappointed over that and started to hate her even more and refused to forgive her for what she did.  
Which is pretty petty and a sign for them being revenge-thirsty, rather than desiring justice for Starlight, since Starlight stopped her actions voluntarily and realized what she did wrong + agreed to learn about friendship and how to really make friends again with the help of Twilight, so that she won’t do this again, which makes punishment for her redundant and would make that needlessly cruel.  
That mindset died pretty much out over the course of Season 6, but a few remain who hate her and who keep their strong feelings towards her, still refusing to forgive her.  
And since they refuse that and still want to see her ending up in jail or whatever punishment they deem necessary to fulfill their thirst for revenge and punishment, they get riled up seeing her doing great things, even though she makes up for her actions by stopping villains while demonstrating that she has learned her lesson.  
Which is something they don’t acknowledge, because admitting how Starlight Glimmer has become better as a person would mean they can’t justify their hatred for her as well as before anymore, so they need to come up with different “reasons” to hate her. Which they do by pretending she’s stealing their favourite characters the spotlight and holding that against her, by calling it a flaw of the arc or the Season 6 Finale that she “got build up by shoving the Mane Six aside”.  
Which is, of course, nonsense, an issue or arc or episode is not flawed because a character they don’t like is the big and shining hero and neither because the characters they love got defeated or incapacitated by a villain.  
Such things are subjective, cause you can’t please everyone by catering to them with their favourite characters getting the spotlight, and therefore, it does not qualify as an objective flaw when certain characters get to save the day while others don’t.  
Which the haters of Starlight Glimmer of course can’t or don’t want to realize, for the aforementioned reasons of the deeply ingrained hatred towards her in them.  
So, TL;DR is:
 
The most hardcore Starlight Glimmer haters will always hate her and never stop. The more great things we see her doing, either in the show or the comics, the more they will hate her, because they don’t like the creators deciding to give her spotlight that detracts screentime from the Mane Six or other characters they love.  
They don’t hate her because of being a “flawed character”, as they always claim it, they hate her simply for being there where, as they believe, their favourite characters should be and hold a grudge against her simply for taking away screentime from those beloved characters of them.  
The claims of her “flawing” episodes or comic arcs by saving the day alone, rather than the Mane Six or Celestia and Luna doing that, is merely something they made up to justify their hatred against her.  
This is a very simple issue of “Your favourite character vs. my favourite character” and if Starlight Glimmer wins this imagined competition, her haters get angry and the sky is in flames.  
And this is not an issue about just differing opinions either. They can have the opinion to not like Starlight Glimmer because they rather see other characters getting the spotlight, characters they actually like.  
But claiming that the writers create objective flaws for showing a character they hate saving the day is not expressing an opinion anymore, it is making things look like objective facts even though they aren’t, and just their own, subjective desires.  
Which is not the worst that comes out of this hate against Starlight Glimmer, I’ve seen uglier things like that, up to straight insults and name-calling of writers and even calls for them to get fired or denied writing, for not giving their favourite characters the roles they want for them. Which, no matter how much one turns it around, crossing the line.
 
I’m accepting of people having different opinions. But, mind me for this if you want, I’m not accepting of fans believing they are special little snowflakes and deserve to get acknowledged and catered to and who get nasty if they don’t get what they want. Especially not if they reach for such low behavior as the behavior I mentioned up there.
 
I would advice such people to be mature about it and realize that their favourite characters can’t always be in the spotlight or save the day in a show with such a huge manecast, and therefore being content with it having such a great show at all, and to realize that they can’t and won’t always get what they want in life, but having had a few talks with such people, I don’t come to expect this maturity from them anymore and have given up on such attempts.

@CMC Scootaloo  
No, I think you know the common complaints but it’s easier to just paint it as ‘haters gonna hate’ for you. You posted on how the critics “know they’re wrong” and “just hate Starlight Glimmer”. That’s dismissing their concerns right there for something that’s easier to attack. I believe that’s a straw man right there.

@Starswirl
 
How do you want to know I’m not doing this on occasion? You also imply I wouldn’t be in the picture about the common complaints regarding the official comics and I wonder how you want to know that too.  
Maybe you are the mindreader here? :P

@CMC Scootaloo  
Good thing you know what all of them are thinking, right? You little mind-reader, you! That is easier than to address their concerns, admittedly.

@Starswirl
 
“Experience” is a strange word to use here, considering that the low opinion some have of the official comics only stems from either misinterpretations or being butthurt because of crushed headcanons.  
Haters of the official comics yet need to do any effort to “experience” the comics, before they can judge them.

@CMC Scootaloo  
No, I think the comic tends to miss those, leading to confused, rushed and flimsy logic. There may be instances where I was ready to believe worse of it than it was, but that’s from experience.

@Starswirl
 
And yet dynamicv is right. Her words did not imply that she thought that Rarity only wanted to create dresses, as there is the lack of the word “only” in her explanation, without which it becomes clear she was speaking about Rarity still keeping the desire to create beautiful things even after becoming evil, in a general sense. Making the mention of “dresses” just an example she used to get her point across, as dressmaking is what Rarity is most well-known for and what she likes to do most.  
It’s very important to pay attention to the wording to understand the meaning behind a sentence, even if this meaning comes from tiny details.  
It seems you tend to miss nuances and subtlety.

@PonyPon  
Mine too.

@PonyPon  
Oops. My bad.

@dynamicv  
I think that comment was originally referring to what Celestia is musing about Accord.

@dynamicv  
She could also have said she wanted to make things pretty. That she didn’t looks like another instance of confused logic.

@Starswirl  
Except Starlight doesn’t say “Rarity still only wanted to make dresses”. She says “Even then, Rarity still wanted to make dresses”. Notice the absence of “only”.