Why is a PUA site talking about autism? In what way is the author at all qualified to tackle this subject? And why should we believe that "mandragora" on this site isn't "the wizard mandragora" on manwhore.org?
Your third question is non sequitur, possibly a ruse to gain information. The author of the article is a neuro-cognitive scientist from the University of California, San Diego. As far as it being a "pua site", the psychology industry as well as mainstream media have been stealing intellectual property from the PUA community since its inception.