I would say it depends on the blend of autism, if the autist attached themselves to a certain media property like hellvaboss, thomas the tank engine, sonic, etc. They will probably choose some character in that piece of media as their "god". This however isn't limited to the obvious pieces of media. You could consider what those girls did to appeal to slender man as treating him as some kind of god. Plus I vaguely remember young girls making shrines to Justin Bieber back in the day, where in they would actually pray to a picture of him.