I feel sorry for the kid and think it's quite odd so many adults have such venom for him and feel so much glee to witness a 19 year old boy having a meltdown. Say a lot more about them than it does about him. He needs some better quality friends around him and some time out of the spotlight. Sadly he's a cash cow for too many people so they won't allow him.
He is also very talented but the direction his management have taken him in doesn't really showcase it. Shame. He would have been better off forming a band with some friends and having a more low key career.
He got his just desserts if it was true that in that restaurant he tried to have a family moved from their table so he and his entourage could have it for themselves on his say so.
If that alone was true then he deserves everything he gets.