@Background Pony #1C13
 
Only the live actor movie version of him is, and I don’t even like to count that movie as canonical; it’s mostly just badly written fan fiction set to the big screen, even though it may have been intended as an R rated Parody at first. There’s no way it’s even 50% in spirit of Scooby from 1969 - 1976.
 
On Scrappy, he’s just a clueless and ridiculously adventurous and peppy pup in the cartoons, who sometimes thought food was for him when it wasn’t. He wasn’t rude, he was just a pup who was quite a handfull. He was at his worst early on from 1979 - 1983, and he mellowed out from about 1984 - 1989. There’s one point (before 13 Ghosts of Scooby Doo) when he was about ready to go after a ghost or monster, but changed his mind. I forgot which episode that is, but it’s from 1983 or 1984.

Scrappy doo is much more Rude that Flutterbtich and Twilight Sparkle

@PreciousPinkie  
Agreed scrappy is overhated

@Aharon L’anglais
 
Didn’t hate him either but Flim Flam could be seen as maybe having his foot in the door of being a bad car salesman kind of shyster, it’s in his name after all. Even his first scene (being chased out of a village) with his wonder drink (which does work against Lycanthropy at the very least) has him touting it in a snake oil fashion. “It’s also (whatever he said) and a darn good dandruff remover!”
 
Oh and the first Live Actor Scooby Doo movie was originally supposed to be an R Rated Parody, supposedly; it then got cut to a PG rating. Guess that explains why it seems like a mishmash, mostly Bootleg flavored.

@Aharon L’anglais  

 
Flim Flam was useless. Scrappy had some cute and genuinely heartwarming moments. Flim Flam had no purpose other than being someone the viewers would hate more than Scrappy. People were supposed to watch Flim Flam’s scenes and go “This kid is obnoxious, maybe Scrappy wasn’t so bad after all.”

@BarryFromMars  
I never hated Scrappy either. In fact if I had written the live action movie, Flim Flam would have been the real villain and Scrappy would have just been under mind control like almost everyone else.

@PreciousPinkie
 
(I’m someone else,) I never, ever hated him. Human generalizations like what the guy you replied to said are a great way to limit one’s self, imagining everyone else is exactly the same as one’s self.

@Background Pony #35C5  
Leave Scrappy alone. He saved the franchise from ending! Show some respect! https://youtu.be/6fdQS-rjsnk

@Background Pony #E8A1
 
Nor do I, it’s pointless in my mind.

To this day, I still don’t understand why everyone hates him.

I wish Scrappy would make a comeback as a recurring character.

Calm down,Scrappy! That’s why you hate from everyone and Fluttershy  
we love.

@SaburoDaimando
 
Somehow I think she wouldn’t like that.
 

“Pick on a poor defenseless GIRL Eh? Well c’mere tough guy! I’ll splat ya good!”

Scrappy-Rappy DOO!

Let me at ’em!  
LET ME AT ’EM!!

Puppy Power !

GIT OFF FLUTTERSHY (kicks Scrappy Doo off a cliff)