Perhaps the intent was to create a self-sustaining dreamscape where they may or may not be aware of what even happened to them, but they’re cursed to be together throughout their time in the world.
So if they got freed, they’d be sick of one another, so they couldn’t harmonize as a team anymore, on a conscious or subconscious level. Unless they became friends, which probably isn’t happening.
@ElCid
That he did when petrified by the Elements. Conversely, Twilight didn’t seem to remember being stoned by the cockatrice. Who knows if they’re awake of not?
@Latecomer
And what do we actually KNOW about Cozy or why she acted the way she did? Do the writers just want us to assume she was just born evil or something and thus it’s perfectly okay to keep a literal child imprisoned in stone while still conscious for decades?
Hopefully the stoned stasis thing is a temporary thing. The Mane 6 could always try to get to the bottom of WHY they’re like this, and once they find their answers, they can test it out. They don’t need to be in stone forever.
@Latecomer
And there you have it. If it weren’t for her convincing the other two to deny their feelings of friendship and teamwork, they might’ve thought twice about working for Grogar.
@Smart Heart
They did all seem like they might be touching on friendship there - but they also rejected it quickly. And even if they had tapped into it, that would probably have just made them more dangerous.