There's this one punk on the Dungeons and Dragons Online forums who reacts to every suggestion to add a non-core race or non-core class (such as Dragonborn or Warlock) with a "oh god no i hate <x> with a passion its just cheesey munchkin bullcrap and the worst thing to happen to dnd"
And whenever anyone brings up anything like "but you don't have to play one" he responds with an argument that, I shit you not, basically boils down to "but it affects me because it means i might actually have to look at one in my party and if it happens i will never allow one into my party. also because it means that i'll have to wait until later for a race/class i wanted to make it in."
He also claims to have been a great DM who believes that sticking entirely to the core rules, not allowing any "splat" classes or races in, and refusing to allow any intra-party conflict besides teasing made players flock to him to play under him. I pretty much said "I have no reason to believe this" to that.
He also hates Forgotten Realms and Spelljammer with a passion as well.
Actually, the best way to describe him is "hates thing with irrational passion". That literally sums up everything I've seen about this guy.