Because any time a man argues intensely with a woman (and they are clearly going back and forth, sparking the situation with each other), he is putting choosing to put himself in a lose-lose situation where he will have to choose being right (meaning not hitting her) and surviving (meaning hitting her and getting violent). Either way is a lose, but being right and not hitting is the socially acceptable loss, but comes with a lot of humility and pride being choked. And a man should not be choking his pride for random women or any woman who is not his wife/direct blood family member, so he should not be engaging in situations where he will have to make that decision.
Also, if you know the bytch is crazy, that's even more reason to stay away from her and especially avoid arguments with her. Step off the elevator and leave them there, let her talk by herself and think she's winning. BUt don't think you're ever gonna win an argument with anyone who is obviously in a very emotional state.