He is acting like one. His recent behaviour was funny for a short period of time, but then it got extremely tiresome to put up with, and it even got pretty damned annoying after a while. I was sort of hoping that his ban would perhaps cause him to ease up a little on it, but it appears that it hasn't. If anything, it's gotten worse, and he's being thanked and praised for it (to a degree).
While I wouldn't call him an asshole, I'd be willing to say that he's acting like one.
Read that instead ^.