Americans & political voting are equally prone to ignoring the facts.

I suppose this statement was true 15 years ago.
Now bigotry and willful ignorance are seen as virtuous traits across the board. Election Day was certainly proof of that.

Politics in the age of Trump is also all about ignorance.

Amen!!

Not true. You will find many beholden to a group and thus their doctrine feel virtuous when confronted with facts.
A fanatical football fan for example who supports "The best team ever", disregarding any stats. A soldier will kill against his base instincts and morality. Both examples beholden to a group and it's doctrine.

Indoctrination retards/ restricts the mind, making it defend the doctrine/ group against all reason and logic. Sure, religions are the masters of the indoctrination process, but they don't have a monopoly on it.