Just because something is human nature doesn't mean it's good. Sports trash talk might not be a massive societal issue but it's still toxic. It does, in fact, lead to murder sometimes and it's very easy to look that information up.

I agree that most people don't take booing personally or seriously. Some people definitely do, though. Wearing a Dallas jersey shouldn't be an invitation to be antagonized. Some people just want to enjoy the game and support their team.