I live in a very, very, very conservative part of the country and it’s nothing like the caricature you just mentioned. It is, though, safe, polite, and friendly. And people are happy to leave other people alone.
That being said, you are absolutely on your own. The hospital struggles, the schools struggle, the roads are awful, and anything remotely related to 'government' is funded just above the point of being dead. And if you do not seem to be 'from here' (read: white, straight, middle- to upper-middle class, or have the right last name) you absolutely will be excluded from most social, religious, and other institutions.
In other words, it's not all puppies and sunshine.
That other 10% is political discussion. Which is a hot garbage pile covered in blatant racism and antisemitism.
I know a woman who lives in Chicago who doesn't believe in dinosaurs. It's not a religious thing, it's just that dinosaurs don't fit into her mindset somehow.
I dated a woman in New York (native New Yorker) whose entire family believed that the moon landings were fake.
I know a guy in Houston who believes that drinking his own pee is helping him live longer.
Crazy is everywhere. It obeys no geographic, social, wealth, or political boundaries.
However, organized, coordinated crazy is a problem, even more so when it is sufficiently organized and coordinated to become an effective player in our political system.