I’ve never been that far to the south but lately I’ve been reading and watching those novels and movies.
The prevalent idea is: in this world (Texas?) you are alone, nobody gives a cr*p about you, do not trust anyone because they’ll take advantage of you, ridicule and mock you. The world (or maybe only Texas?) is an inhospitable, inhuman, Darwinist place.
That doesn’t make sense. The other commenter is merely saying that they see people do the same things in other states.
That’s all. What does then being unpleasant have to do with it.