>evolutionary explanation
Hmm... I hope someone more knowledgeable than me in biology jumps in to lend their thought, but I'm extremely skeptical of takes like this - another one I see a lot online is that somehow homosexuality has "evolutionary explanations." It doesn't jive with my understanding of how evolution works.
Statements like that seem to imply there is some sort of intelligent force or plan behind evolution, when instead it is "directed" by noise, not "reacting to" noise.
As far as I know there's no way for evolution to "sprinkled a bit of autism" across a population for an increased chance of population survival - I don't see how such a mechanism could exist.
That's not to say that autism doesn't somehow improve society or populations, maybe it does, I don't know. But I don't think we can point to evolution as the mechanism.