I think something is going on reducing some functions of human brains all over the world.
Like the rise of ultraright groups around the world and here in the US.
Like a setup for war, maybe aimed at pushing humans back a few thousand years?
This anti vax thing, not just here in the US but around the world.
This is a big hint as to what is happening to human intelligence.
See Poul Anderson's story Brain Wave.
Like maybe we are just getting into the dumb down field, a previously unknown force field that effects organic brains and this field is just now floating through the solar system.....