Ok, I'll try to explain maybe where they're coming from.
1. He posted his stuff on the DT part of the forum, saying he'll take requests. That kind of says that he had some pretty high thoughts of his voice.
2. His videos are mostly him trying to act like a rock star, with all the head banging and moving around and hand motions and so forth, especially when they're just supposed to showcase his voice.
3. He has his own forum with no members as far as I know. Why would a 19 year old kid need an official forum? You have to earn things like that by having fans, he has none outside of his friends/family, none of which needs a forum.
4. He has a rather insane biography section. No 19 year old with no experience needs any kind of bio, especially one like that. And the food poisoning thing is just odd and strange. It just makes him look like he takes himself WAY too damn seriously.
5. Despite all of our actual cricitism, he keeps posting videos and hasn't gotten better. Why? Because it's been a month. Who gets better in a month? No one. We suggested taking a very long time to tone and perfect his voice, and all he did was post more videos of him still singingly poorly.
6. It seems his friends and family give him absolutely nothing but praise and adoration. None of us need to. Especially since he isn't very good. And he's not 8 years old, he doesn't need us to let him know that he's special and that he can do anything. He's an adult, and we're treating him like one.
If he was WAY more humble, took himself seriously and just acted like a 19 year old guy who's learning how to sing, instead of a rockstar who needs to catch a break, we'd show him more respect. But as of now, he has done very very little to earn our respect.