Actually, I have a hard time believing anyone acts that way in person.
My job requires me to deal with all types of people from all types of backgrounds. I have never seen anyone act as stupid in person as he does in this game. Very likely, what he says on the internet is just what he's too scared to say in person for fear of loosing necessary body parts. He's role playing, which we're all doing to a certain extent. Difference is, he's role playing to be a ridiculous POS while the rest of us are pretending to be pilots.