People say this as though teens and tweens aren't just going to find something else to latch onto immediately to bully the fuck out of one another.
I never dealt with the "blue bubble" thing but it's not like I wasn't mercilessly bullied for basically my entire education about everything else you could possibly think of past the fourth grade. I'm all for tackling bullying, I think it's fucking heinous the kinds of things schools let happen under their watch, but let's not kid ourselves that Apple opening up iMessage is going to do a fucking thing about this.