Autistic people aren't always particularly annoying.
#
Anyway, one's based on a deficit of ability and the other's based on a deficit of will.
Oh, I'll grant that strictly speaking the dick can't really be anything else - free will doesn't exactly show up as a major correlate.
But when you change the social pressure's in the dick's case you get different behaviours out at the other end - whereas when you change the social pressures in the autistic person's case they don't stop being autistic for all you can train some of them to fake it somewhat when they get older.
(Aspergers is no longer a disorder, it got rolled into autism.)