He got away with his Hansi account for a long time, but that’s because no one could prove that it was him, even though I think we all knew it.
Hell, I’ve been back and forth on whether “Dat” is him every other time I see him post. It’s the same line as thinking with the Hansi account, though. He tried the rapid account creation/spamming/banning approach (and is back to doing it today). Became unsatisfied with how it was going, and went for the slow and steady trolling approach because he actually does want to be part of the community, despite being utterly unwanted.
Dat seems to participate in actual conversations sometimes, though, so I haven’t quite convinced myself of him.