Men have to deal with some form of violence in their lives, or at least the threat of it. Most male encounters has an undercurrent of violence. Offend another male and you might get assaulted.
So when you expose men to violence it's a matter of the world. Like Tyson said, social media made y'all way too comfortable with disrespecting people and not getting punched in the face for it.
If you expose women to violence they will acclimate to it and begin to see it as the norm. That means they'll accept it, from their teachers and eventually their partners.
Its entirely rational to only apply this to boys only.
We hit boys, so it is ok to hit boys, but we don't hit girls, so it isn't ok to hit girls?
That's so very, very wrong.
Let me give you an example. If a man called the police and told them his wife is hitting him, the police would come and arrest the man.
Why would women acclimate to it and see it as the norm while men don't? If anything, exposing men to violence will also make them more violent in their future relationships.
For boys, fighting or threat of violence is just a fact of life. They are taught at a young age not to use that violence against someone that's not roughly physically matched, which includes women. That's why we tell boys never hit girls.
Why do you pretend you don't understand?
Part of the reason men cause so much violence is because of people like you, your exact mentality. Which says that's its expected for men to be violence, so, c'est la vie!
Men are not just like... inherently violent creatures, that's a stupid and toxic mentality. No, they're socialized to be violent by other men, who were also socialized to be violent.