Crypto has always been a bit of a tricky subject. He does troll, but for the most part it is harmless. I don't know about all of the details of every ban, but his ban for homophobia is unwarranted though, or at least I feel it is. I'm going to pull out my sexuality card here to make a point. As a bisexual male, I found his posts to be humorous.
This one in particular was worded as a perfect parody of someone with no grasp of the concept of equal rights.
As for the being confrontational/trolling thing: Kwuartz does that all the time, and
clearly he gets away with it. In fact, I believe he told me via teamspeak, that he "gets things done" that way.
I'll bet most of us have been confrontational about issues on the forums at one point or another.
Anywho, that's a +1 from me. He's a fun guy to have in game, and he's harmless.