I feel that's one-sided and doesn't take into account evolutionary benefits from being non-nt. The thing is, the last 6k years of human history is such a tiny blip in our time as humans that it's largely a mistake to take survival evidence of such a short span and apply genetic drift to it.

And considering the survival benefits of technology are exponential, I would see having focus driven non-nt people in your populace would result in great and frequent survival benefits.