@ErickaSimone Folks don't need a diagnosis to prove they're non neurotypical, and challenging whether they really are doesn't further anyone's interests.
But if someone is using that claim as an excuse for behaving in a racist manner (or any way that furthers someone else's oppression, or just being an asshole), it's not a valid excuse. Most non neurotypical folks are not like that. Autism doesn't make you racist. Racism does.