Temple Grandin has been a guest on Terry Gross' Fresh Air several times, and is a very smart woman who is high-functioning autistic. There is a TED talk by her making the rounds that has the introductory remark that "Einstein and Mozart and Tesla would all probably be diagnosed as autistic spectrum today." Here's the link.

His social skills (or lack of them) were highlighted in the movie but yes, the rivalry in the film between Mozart and Salieri was manufactured. Too bad, because that is the "version" people will remember.

SRS