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 ?
Maybe like, one day you are gonna need the social safety net, even if you’re a very strong cis het guy.
One you’re gonna be old. One day you’re gonna be fired without notice when your car breaks down. One day your girlfriend might have a surprise pregnancy you can’t deal with.
Just brainstorming but I would start with saying, sure this doesn’t benefit you right now, cause you got the luck of the draw, but one day we will all need help