[Nasrudith]

The funny thing is that it may have also been an advantage of sorts in hunter gatherer days - as in actually able to survive alone in the wilderness without plenty of prepared tools which is actually a very hard task long term. Bands of people cooperating boost it ensure survival. Given what I know of sensory capabilities in addition to things like lost autistic children in the woods being extra hard to find - while not being prepared to survive.

Given that it is on a spectrum and a slow learning process of coping occurs underdiagnosis is likely - especially among women and girls.

I suspect the case in Silicon valley is a higher degree of traits converging and the social masking being less imbued in addition to concentration. Although if pollution was a provoking factor it would.

Tech is a pretty good setting although people with autism and they may thrive there I think it is way too fast for evolutionary impacts short of massive selective pressure - like the Black Death or pretreatment endemic malaria.