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 ?
You’re paying with your body, the work can be very dangerous, and it takes a while to ramp up to decent pay. On top of that the pay isn’t always going to be better than a degree (iirc research has concluded that lifetime earnings for trades are behind degrees), ignoring countries with sensible tertiary education options.
Trades are not equivalent. And education is still a significant indicator of political alignment.
Honestly, this is a great example of the empathy gap.