This might sound weird, but we should teach rhetoric in schools, which includes these kinds of dishonest player verbal tactics, because my thinking is that if we can name and speak openly on a meta level about these types of manipulative tactics, we can defend against them more effective.

Similar to teaching people how to hack for the sake of improving computer security, or maybe more similar to the old fantasy trope of the monster / sorcerer or whatever losing it's power if you know it's name. I feel like most people know of these tactics, but they can't call them out effectively, because it's cumbersome and awkward to do so.