There is no evolutionary advantage for the best and brightest when our technology is available to the slowest and dimmest.
Perhaps more importantly is when social support systems induce lower IQ to reproduce. Great example is aid to dependent children, the more low income women stay home and have kids the more they get paid. Where as an intelligent woman goes to college, gets a job, house, savings account and has little time to reproduce.
What I was hinting at with President Johnson. He started most of these cradle to grave entitlement programs.
These are generic statements, always exceptions.