I don't think the kid deserved any of he flack he got. His tantrums were symptoms of a childhood stolen, one that he never really got to terms with.
In the Never Say Never movie, Bieber said he wanted to eat and ice cream and play with friends, but his parents and manager kept saying he's not allowed.
Eventually all these bottled up feelings and constantly having to do things against your wishes gets to you. I hope he has a better life from here on in.