Autistic people can be "othered" and discriminated against in many ways. Take the story of Payton Gibbs, a 12-year-old autistic girl who was suddenly banned from the sidelines at football games for "reasons".
Some autistic people rely on rehearsed scripts they have memorized to use in certain social situations. They may have learned what to say from observing others, or perhaps from tv shows and film.
Not knowing what to say or do creates a lot of anxiety for us.