I had a friend's wife gas-light him into thinking he is on the spectrum and that many of his friends from college are as well... A well established and respected engineering school in the US. I'm not saying there aren't people there who would most likely fall onto it, but being detail oriented or interested in science and engineering enough to get credentialed in it being a signifier of autism was just sheer lunacy.
It really is frustrating how fast our society devalues and dilutes the meaning of any word these days.
I always think of the SMBC "old physicist" comic: https://www.smbc-comics.com/comic/2012-03-21
Normies have since invaded and finding someone to geek out with has become hard. (No one wants to discuss the finer points of CPU architectures anymore!)
That seems incredibly unlikely today, and doesn't at all match with my experience. Obviously I am not qualified to diagnose someone with autism, but the idea that more than 50% of my colleagues, past and present, are on the spectrum... that just doesn't pass the smell test.