I guess it just varies with whomever your talking to. The whole “give up dreams for reality” is a bad idea for a general kid’s show. But to me, it’s a stunning and, unfortunately, a true aspect of life. It’s relevant to me because Post Crusade is the anti-FiM. It’s a world where magic and friendship not always solve everything. It shows an aspect of life that you can’t just shove into a child’s face.
Personally, I've always seen Scootaloo as a handicap. Even before the “chicken” meme started. And it makes up a good 15% of PC’s backstory. Though it’s a sad possibility, it pushes the envelope on what kind of reality children are exposed to on TV. A reality where things don’t always turn out well, or where not everything is candy-coated and happy. If used correctly, Scootaloo can be a good example on how things are not so perfect, but you can still achieve great things nonetheless.
People might hate me for this, but I hope that this, plus her being an orphan, becomes canon.
(PS: Don’t expect Post Crusade to turn out that way, though. Scootaloo broke an unbreakable land speed record, but she’s still a crippled, clinically depressed orphan. And that’s it.)