I know a number of people who when presented with evidence of their own assholery will give the "I have Asperger's" excuse. I don't think any of them have been diagnosed with Asperger's, and, well, I have my doubts. (In fact, one of them will deny having Asperger's under other circumstances.) I tend to think there's a distinction between being an introvert and having not developed particularly good social skills and being on the autism spectrum, but I also don't think I'm in a position to identify which is in play.

Hm. I know folks on the spectrum who have committed assholery. But it's mostly an isolated instance sort of thing. In one case, the... I'm not even sure it's assholery, exactly, but there was some repeat creeping (particularly, hitting on women who had just been assaulted and were obvious upset) that bothered me enough to change how I dealt with the person* but the circumstances are complicated enough, and the individual socially idiosyncratic enough that I don't feel I can really pass judgement.

* I wasn't upset when he hit on me a few hours after I'd been raped - even under the circumstances it struck me as darkly funny, if not welcome - but when I found out that he did this to other people it seemed much most disturbing in retrospect.