Never mind the freaky twins: Click for fireflies.
Less humans at this point is a distinct 'evolutionary advantage' is it not because greater numbers is hurtling us towards a 'major event' leading to self annihilation whereas less humans gives a greater chance of being around long enough to 'evolve' further and continue as a species ..
The colloquial translation there would seem to have something to do with hubristic scattershot irrationalism speculating at how particular outcomes presently describing disruption and antisociability will somehow save the species.
It's not a lot to go on.
Let's run with a version of the awful joke: Certain of these spectrally classified individuals will demonstrate results that make them excellent cogs in future systems, but one of the problems they will face in longer endeavors than the immediate labors before them is remembering what they're on about long enough to reach the next step.
A less awful way of going about it would be to compare these people to some in fiction; over the course of
Darker Than Black, the behavior of Dolls changed in ways we might describe in terms of social evolution; indeed, it is arguable that, by the end, Dolls reclaimed their humanity, but that becomes a
-centric versus
-futurist discussion. For our purposes, we might wonder what the Dolls were evolving toward; the difference between July's evolution and what seems conditioned and cultivated behavioral attitudes in Ariel and Bernice—though something about twins probably goes here—is notable in itself, but what they are becoming is its own question. There are no endpoints in evolution, save extinction, but what is the next LTS?
If a given symptomatology is not actually a dysfunction but, rather advantageous characteristic, how does that work? Consider, as the discussion has it, that the question of
large families↑ does not bear any constant relationship to population. Perhaps "Aspies" won't be forming large families, but you can't tell me they're incapable of fucking like rabbits.
Okay, really: Do diagnosed Asperger's subjects actually refer to themselves and each other as "Aspies"?
(I'm pulling a question and joke, on edit, as I note your next post in re "'evolutionary' advantage".)
(Edit: Revise remarks; 17 July 2018, 0005.)