It is still considered rude to wear one’s hat, ten gallon or pint size, inside a home or building. Wearing in large public spaces is tolerated, unless a building for religious purposes.
We speak English, German, Czech-Slovak, Spanish, Vietnamese, Mandarin, French, and a smattering of other languages depending on where you are. No different than any other country.
Braggadocio, stereotypical in the movies, is more of a personality trait, than reflective of most here.