Did a spot of research. Members who identify as being on the autistic spectrum (usually but not always Asperger's) include:
Master, GNineify, buildersith, The Edditaur, Mammothphant 2, Spanex, stan423321, Cairnie, Puruun, CheatCat, blacklumbob, Earth Gwee, iHeckler9, Leondude, Spyrodifusion. I think it's safe to say Locas and iambored2006 are also autistic, but this isn't confirmed. SuperSunshine has admitted to having symptoms of the disorder. Raydragon from RaymanZone, Serza's brother, buildersith's mother and paulp's son are also autistic, and so is at least one Rayman fan I know in real life.
QED: Rayman = autism.
Edit: Members who have revealed themselves to be autistic in the time since I made this post include Dark Lum Lord, ZeptoRay (one of whose friends is an autistic Rayman fan), tuxdude143 (one of whose friends is also an autistic Rayman fan), and Rayfist. Louvis says that he displayed autistic tendencies as a child too. Stay tuned for more autism!