Interesting the author doesn’t cite a single of a Church turning away a child specifically for the reason of “autism”.
Certainly there have been cases where the parents of autistic children have been asked to leave but it’s because of behavior, outbursts, not autism.
My son is on the autistic spectrum, and I’ve seen other children and young people in church who are more noticeably autistic. They’re welcome, as are children with Downs Syndrome, muscular dystrophy, etc. Yesterday I saw a young woman with a service dog.