A lot of people that complain about queue's and casuals and whatnot have shitty real-lives, and they compensate by trying to be better than people in games like WoW.
If you derive your self-worth from real life and you simply play video games for fun, you're going to have a hard time communicating with those folks.
The social aspects of the game, along with the dozens of hours a week you need to be successful in old-school WoW are the low-hanging fruit for these sorts of trolls to go after in order to prove how much better they are as people.