I have no idea if George Lucas is autistic, but this story about his take on dialogue and exterior shots (from here) is just about the most stereotypically autistic thing I’ve ever heard.
Lucas was a stickler for logic. Editor Paul Hirsch, who worked on the original 1977 Star Wars and The Empire Strikes Back said in his new autobiography that Lucas didn’t like dialogue playing on top of a shot of a building. Lucas would complain, “Is the building talking?”