My son is autistic and he can't leave our house and tell someone he is autistic without them trying to compare him to Rain Man. He's nothing like the character Dustin Hoffman played, and people are not very nice when they find out most autistic people are not like that.
So your issue isn't that someone is portraying an autistic person, it's that you're worried they're portraying it inaccurately (either in general or relative to the types of ways autism presents in your life) and this will make people misunderstand at least some autistic ppl?
Nah nah, of course they have an issue with someone playing the role who isn’t autistic. They are so ideologically possessed by their narrative they fail to recognise the positives that come out of this.