I think progressives never thought about this because we banked on immigration and demographic change allowing us to win culturally and electorally but the issue is immigrants tend to be overwhelmingly male, that is how Trump won actually he won over a lot of Hispanic,Black,Asian and indigenous men who feel humiliated by a new culture, economy and world.
So what can we do rhetorically and policy wise to win more young men over ?
Feminism started as a way to fight for the rights of women. That’s not anti-male, but it’s also not “for everyone”.
Of course the focus is on women and generally LGBTQ+ people, as they are oppressed groups.
In its wider sense though, especially with the focus on intersectionality, it is for a fairer and juster world for everyone as the systems of oppression affect us all in various capacities.
I don’t know if I would categorize that as feminism though. Egalitarianism maybe? “Social justice” in the non-derogatory sense?
Feminism is just a collective name for various ideologies with the aim of social justice for all genders/sexes. Within you will find many different movements with various qualities. In general, it’s about creating societal/governmental systems that afford the same quality of life and opportunities for everyone, regardless of gender, race or sexuality.
You could see it as a subcategory of egalitarianism, which in general has the goal of social justice.
https://en.m.wikipedia.org/wiki/Feminism
In the end, of course not every movement is perfect, people are fallible after all. But that doesn’t only concern feminists even if they are one of the main targets of the manufactured right-wing culture war. And furthermore, some people going too far/not being nuanced enough/not going far enough is not a reason to disregard the movement and its wider aims in a fight for a better world for all.