By the time enough people notice what's happening, it's often too late for a vote kick to make a difference. Even then, to get a vote kick off people need to look at the chat to see the reasoning and...often it's a struggle getting people to look at the chat in the first place.

Luckily I haven't seen this sort of thing happen too frequently. In some cases, I'm not convinced it's even intentional so much as some people just being utterly lost when they sign up to PvP on a whim but don't know what to do.