I think you're going pretty easy on Oklahoma, perhaps just because you like it for other reasons. Oklahoma would put people in prison for consensual same-sex relations as recently as 2003. The law remans but the US Supreme Court struck it down. Ask yourself if a state with a statute against "detestable and abominable crimes against nature" has a prevalent anti-LGBT attitude or not.

There are people alive today who survived a white-against-black race riot that killed hundreds in Tulsa. There are people alive today who were imprisoned and threatened with sterilization for being gay. There are followers of Islam alive today who needed police protection after the 1995 bombing of the Oklahoma City federal building instantly became an anti-muslim witch hunt. Oklahoma is objectively one of the most backwards places in America. It might be better than it was, due largely to federal preemption of their theocratic laws, but it's still incrediby intolerant.