I think heavy porn usage is often a symptom, not the cause. If a dude can't even get a date, then there is only one thing they can turn to...
This is a topic, which is incredibly important, but nobody seems to care about it or even discuss it. I actually wrote an article on a similar topic back when I was starting on Medium in 2019, there I also linked the rising deaths of despair among men:
https://medium.com/p/400f54b84ea9
It's an important topic and deserves to be talked about a lot more. Sometimes I have seen it framed in terms of poorer, less educated men having this problem, but the same problem occurs also among hyper-educated men who would be considered successful in terms of money and career. And also not just younger men, but also men in their 30s and 40s.