Interesting video, but I disagree. Think of the mentally disabled individuals who are employed, usually in positions using rote. Occasionally, in the prisons I worked in, we’d have an inmate with an IQ in the 60s. If they qualified (by behavior) they could do most of the prison janitorial and laundry jobs. Of course, all of the inmates are under constant supervision (unless you’re Epstein).
but my point being, with a lower IQ average, you cease to be a spacefaring nation, a nation of promise, and you become Nigeria or Guatemala. Easily controlled with EBT, firehoses and dogs