You cheapen and undermine your argument when you start talking about IQ like that, it conflates some arbitrary measure of intelligence with politics and ideology which has nothing to do with intelligence. Plenty of people who are absurdly booksmart with super high IQs are complete rightwing nutjobs or believe in utterly ridiculous bullshit conspiracy theories that drive their politics.

The cancer is in our cultural belief systems (and alarming lack of empathy as a grounding value) not our brains.