Here’s why IQ matters. By HoeMath.
Look at the percentage of problem causers vs problem solvers in a 100-avgIQ group vs 85-avgIQ.
Imagine MOST of your population is problem causers, a tiny sliver is problem solvers, and no geniuses? A place like that would look like, well, like Somalia or India.

Neither midwits nor maintainers are capable of seeing problems coming down the road. Their perspective is always a limited one of the last 15-20 years.
The maintainers ignore everything but their day-to-day responsibilities and the midwits devote themselves to aggressively attacking every problem solver or genius who is concerned about the problems the midwits can’t yet perceive.