Yeah but the targets already know that advice. It's like telling a rape victim 'stay away from creepy men.' That's not helpful advice in most cases, and it's doubly annoying when the advice-giver isn't obviously making any effort to confront the bad actors, but handwaving about the existence of rules or laws. It's not enough to just put a rule in place, bad actors need to be confronted and attacked for the bad behavior they engage in.