That sounds like the same moral panic trans people face. Oh, the children are turned trans by social media and all that shite.

No mentally healthy person is going to pretend to be autistic. There is still a huge stigma against it despite some parts of social media being progressive. I don't think a neurotypical person could even easily "fake" it. If you fit in with neurodivergent people, you probably are yourself.

People have always been gay, trans, neurodivergent, whatever. They just had to hide. Once they are tolerated by society, reactionaries will spread moral panic saying "Everyone is X these days". There were always who they were.