You can vote with the "Ignore" thingy. It's actually better than a ban - sort of like "shadowban" feature available on other forums. The user can still post and they don't know that their posts are not visible to others. As opposed to getting banned and creating a new account. The only problem is to get more users to use "Ignore".
I have to put entire sections on ignore, not just individual members (and that list is extensive, too). It's really unfortunate that I don't read Bitcoin Discussion and that I get crap or no responses to some of the threads I create in Altcoin Discussion/Speculation, but that's just the way it is. Then again, people might be afraid to post in my threads since they tend to be self-moderated, but who knows.
Voting against freedom of speech? I sure hope theymos will never implement that, even for the users I completely disagree with.
Not likely he's going to do that. That's the best part of this forum, even if it allows morons to replicate like E coli on spinach.