Agree that the US can be pretty puritanical, so some of the aversion to cheating is driven by guilt/shame. But on the other hand, when you grow up without the necessity to lie/cheat, and when it isn't normalized, you never learn the methods to get away with it, and sometimes that's enough of a deterrent.
There are things in my life I'd rather lie about, but I don't because I never learned to lie convincingly. The same with cheating. Figuring out how to cheat on a test/interview sounds like a way more effortful and stressful experience than acting honestly (I shudder to imagine how it compounds imposter syndrome).
Imo "moving" to Florida (and similar tactics) got normalized, so it's easier for people to learn how to do it from a friend etc. so they do it more. No moralizing necessary.