They do. I remember how GTR openly said that Thorin didn't know shit. I believe many pros have stated quite clearly that they don't like them, but when GTR does it, you know someone is an ass.
My biggest problem is that event keep hiring them. First of all it makes me not wanna watch the desk at all if they are at events and besides that it seems to kinda teach the younger generation, getting into cs, that this kind of pathetic behavior is okay.