@CatLord @jeffcliff >I personally think it's due to a bunch of different health/diet/industrial factors and doubt that it's at all due to PTSD from needle pokes being mistaken as autism.

I agree that the explanation I proposed seems unlikely and absurd. What bothers me is that despite this, I can't fully rule it out. There's obviously better explanations, which makes it unsatisfying that we can't stamp out this weird one.