I support Bieber hence my updated avi but the reality is this.
Comebacks are hard to maintain...I mean because, britney.
Bieber has the drive but the reality is that his team played their cards right and are keeping his bad attitude out of the press to not spoil the comeback hype.
What will happen after his comeback era or even towards the end of his comeback era is the reasons that people dislike him will comeback in effect and it'll be a matter of him either maturing or he'll let the success go to his head again and they will turn
Mariah came back and kept it cool and towards the end started wearing those "eternally 12" outfits which led to her thinking she could do it in the future and it didn't last
Britney came back and they kept her together and then towards the end of her era she started gaining weight and not giving a bleep which led to lazier ways again.
If Bieber's "purpose" ends up just being a game to keep his comeback era doing well and he's still the jerk that he was before or if he feels like he can get away with being a jerk again then people will turn.
He can go either way but STILL won't ever have the impact, success and influence of Britney Spears.
I do wish him well because he enough of an icon to deserve a comeback era
ART. ART. ART!!! Too bad her fan base is gay af these days so she will never experiment like this ever again. 
Bieber ain't doing that.
Maybe not as much as Bieber, but she definitely was.