Negotiating salary and hitting someone are not the same thing. One is a violent act of assault and the other is a conversation to decide your rate of pay. Furthermore, some people do make excuses for men who commit violent acts on the basis of their social situation and upbringing, even though it is flawed to do so.
Also, I have personally seen and continue to see news stories, editorials, and blog posts about social conditions for men, esp. in regards to men taking part in "traditional" female roles, such as child care, certain types of labor, and even certain kinds of hobbies.
It is deliberately misleading to say that social conditioning and social issues treat one gender one way and another gender the other way, not too mention that such a position completely erases and doesn't acknowledge the existence of those who are not cisgendered and have a different experience in regard to their social experience.