Simple
I don't demonise players, try to make out that the PvP community knows nothing and are just children. Still I do not enjoy PvP, and find that characterisation of me a little insulting.
Well, the one thing you guys are right about is, PvP is a minority sport. There are plenty more PvEers due to the nature of the game.
If I go by the assumption both groups have an equal percentage of pillocks who stereotype the 'other side' in absolute numbers there will be more PvEers belonging to that group. And those will manifest themselves in a forum, since forums are a perfect medium for division. You post more often when you disagree with someone than you do agreeing with someone.
So yeah, I can see why you would get the impression, but if you think about it, the premise is ludicrous. Because of some way someone plays a game, they have characteristics x, y and z.