That's like saying that because men are more testosterone driven and prone to violence, society should just accept it because any discussion about it would be "

That's like saying that because men are more testosterone driven and prone to violence, society should just accept it because any discussion about it would be "stupid". Your assumption is that your opinion that violence (or crudeness) is socially unacceptable implies that opinion is shared by everyone. Clearly it is not, as is evident from the fact that these things happen. Do not underestimate the power of a strong community response to influence the behavior (if not opinions) of individuals. You should also not underestimate the value of a strong condemnation to the victims of such crudeness/violence. After all, how should these women know that the majority of men consider this behavior unacceptable if that majority doesn't pipe up?