I'm not inviting anyone to nail on him, I'm just telling it how it is. If everyone is doing it, there's got to be a reason. Bigger chance is that he's the rotten apple and not the 30 other of us. It's not that he's dumb, he's annoying and irritating as well.
Drop the all-holy attitude, people like him don't get ignored in life. I don't know why we should do so here. His behaviour deserves provocation and that's what he gets.