The discussion is centered around opening up to your mate, not society
Your mate is part of society. Your mate will be more influenced by society than she is by you, just like a child will eventually be more influenced by society than their parents. If society doesn't value you for you and not what you do, why would you think she will?
If society doesn't provide resources for you, because society doesn't value your specific hurdles and tribulations as man, why do you thinks she'll have any idea of how to handle your emotions and problems in a productive manner.
Because she loves you? Lol.
Think about it, women have nationwide women's shelters, women's health, women's professional groups.
All these institutions influence individual men on how to handle women's problems. It influences how we think about women. Men don't have these things because society has decided that we don't need them. We supposed to brave the world on our own.
So when you come to your wife or girlfriend with a problem, sure she might smile and say the right things but deep down inside, she'll gonna think, "Damn, how can I depend on him, if he can't handle this?"
In her world, she is supposed to receive support and have institutions and people to turn to when she has a problem. A man is supposed to model that for women.
(Like I said before, if you are an average guy, your life to most people really isn't that complicated and problematic. If you are Chris Brown, a woman will understand why you stalk women and beat up Rihanna. Men with talent, status and power have the privilege of being complicated )
Then lol, your dumbass think you made a connection or whatever, and you keep leaning on her and next thing you know she's getting her back blown out by the motherfucker that don't say shit and act like everything is fine. He ain't foolish enough to go blab about his problems to a woman he wanna fuck and be with. He blabs to women that don't get his dick hard.
He's stable, reassuring, unwavering compared to you. He has a chiseled jaw and an S on his chest and you are just a fucking mess. That's the reality.