Real talk for a second:
My wife is a behavioral therapist, she works with lots of kids who are on the spectrum, and sometimes they will say racist things not because they are racist (they're kids) but because they have an inability to understand what they are saying is something racially sensitive.
So, ya... autism could lead to someone doing or saying something that is offensive without that person being whatever -ist they've been labeled as. I mean, just look at Benji.