Dutch Uncle
* Tertia Optio * Defend the Constitution
One of my brothers-in-law has a masters in history. He is also an evangelical Trump supporter. Like you I've never had the desire to ask him if he's a young-earther or not but I wouldn't be surprised to learn that about him. I do know that neither he nor his wife, Mr. Owl's sister who has a BA in communications, accept evolution as truth. They have one boy who is 13 now; he has attended only carefully-selected Xtian schools so that he won't be exposed to such false beliefs.
They're definitely not stupid in the least. But they are willfully blind.
As much as I like history, it's not a "hard science" like math, physics and chemistry. Some parts of it are, indeed, scientific like unearthing an ancient city or translating an ancient manuscript. Still, more of an art than science. Psychology is the same way with Behaviorism being the scientific side and Freudian and Humanism being the fuzzier side.