Because men have failed women - miserably for 5K years and they continue to fail them today. We aren't going to stop talking about that until it gets better. It's not our job to fix the dominant culture - it's yours. Men still to this day have more economic, social, financial, and political power. And women are still demonstrably marginalized and the victims of sexual violence at the hands of men.
That doesn't mean that men have no problems or that we shouldn't care about them but stop asking us to take care of you too when our lives are literally on the line. We want equality for everyone, and for the most part, you need to go do your own work on that front. Masculinity in this culture is incredibly toxic - to us all, including men. Unless you take that on for yourselves, it's not going to change. It's a real sign of privilege that you expect feminism to "save you" too. Go do your own work. The message that men get from feminism is negative because most men don't want to do that. They don't want to do any introspection or hard work and they don't want to give up their privilege in this culture. Too bad, so sad.... If you want us to stop yelling then do your part to make it so that we don't need to. To be really frank, we don't owe you shit.
It's not that I don't care about how men are harmed in this culture - I have several beloved men in my life - it's that it's not my job as a marginalized person to put your needs first ahead of my own. Stop asking for that. "Man up" and do what's needed to co-create a better culture for us all.