DoctorDisco , 
I know many autistic individuals (myself included) who (on the whole) are not assholes.
on the contrary I find the vast majority to be very concerned about "doing the right thing"
unfortunately all you need to be an asshole is a desire to be said asshole.
As such, echo the sentiments of others here and say ditch that person.
The "Oh I'm not an asshole/racist/sexist/etc ... I'm autistic!" argument didn't work for Musk and it won't work for others.
he can still be autistic AND an asshole.