The reason why people below 80 IQ can't function in this world, is, that 80 IQ people built this world.
It's a low IQ world.
100+ IQ people add fake complexity to prevent their tricks being found.
120+ IQ people get to be lazy.
140+ IQ people get to invent personal problems, suffer as a sport.
The rest of us look down - realizing this is not an IQ world to solve but a spiritual problem.