The reason I hate this argument is that it manages to simultaneously try to excuse unacceptable behaviour while also marginalising a serious mental disorder that in more extreme cases renders people unable to function in society at all. The reality is that anyone who refuses to believe that their behaviour is unacceptable and then excuses it on the basis of being on the autistic spectrum is being an asshole.
I've been that asshole. I'm very sorry about it, but if more people had pointed it out at the time maybe I'd have dealt with it faster. In the end it took working with people who were unable to, say, go into a bar and order a drink without elaborate social coaching to show me that I was just making excuses for myself. If you're able to turn up to a conference in person and have face to face conversations with multiple people then you're able to learn to recognise that your behaviour has an effect on others and train yourself to avoid things that are likely to cause offence.
Nobody benefits from just saying "It's not their fault". Offended people are still offended and the offender continues offending people and ends up dying sad and lonely. Using the Asperger's defence is itself offensive to people on the autistic spectrum who've overcome the adversities they've faced, those who've put themselves through hell in order to be able to step outside their house on a daily basis, those who you wouldn't know had a diagnosis unless they told you. I'd respectfully ask you not to do it again, but instead to accept that the personality flaws of some of our leaders may be down to their fundamental personality more than any mental disoders they have.