I feel like this is the first post that pointed to something other than sex-ed, sexuality and sex in society. I was expecting to hear a few more "boys don't cry" type of opinions or thoughts.
Part of the reason for that, I think, is that we're talking about young men. Some of the suggestions here would be great for reaching thirtysomethings, but by that age, a lot of them are gone forever.
I used to lurk on an incel forum, just to get a sense of the psychology. By far the most common complaint was that Becky and Stacy only want to do Chad. But a second complaint was about guys feeling stressed about their lack of knowledge. As you can imagine, a lot of newbs to the forum were there to tell their tale of woe. Some of them were about how they couldn't ever get a date, but there were a lot from guys who got a girl in bed but everything went south from there, and not in a good way. A lot of "it was my first time, and she wanted me to know everything" or "I tried, but she just wasn't happy." And then the commiserating replies made it clear that these dudes were doing what they saw in porn and being surprised that it wouldn't work.
I posted a single time on that forum (from a fake email that can't be traced to me, not that I know of), and it was something like "porn isn't realistic. Women are bitches [gotta say that for credibility with these folks] but you're a fool if you think women want irl what they want on film." That comment was not well-received. Maybe they saw through my feigned attempt to fit in. It certainly seemed, though, that this crowd either expected life to be like porn or they turned to porn because where else are they going to learn.
I mean, it doesn't even have to be sex-ed in schools. How about movies. Instead of showing the couple getting into bed, and then waking up the next morning, how about some depiction of what goes on. And I don't mean scenes of raucous but non-revealing sex (these are likely part of the problem). How about a scene where they are kissing, and the woman says, "can you lightly touch my breast?" or "I'd love a neck rub" or something along those lines. Do that for a minute and then you can cut away to dawn.
Of course we know why nobody will show that kind of thing. It doesn't have to be that way.