Teaching men to not rape is actually very important, both from the side of the potential victim, and the aggressor. Boys and men get conflicting messages from churches, media, and peers. They're told to "make the first move" and "put themselves out there" but then also to not act like a predator, and make sure they always check for consent. To a young man, these messages can seem contradictory. Having an open dialogue with/among boys and men about what could be seen as sexually aggessive or threatening behavior avoids lots of trouble for them in the future. I don't understand how any parent of a young man could think that this is a bad idea. Better to have a clear talk now before anything happens, right?