What do you think of the “male loneliness epidemic”?

I'm asking because I used to be a part of it. I'm in a 4+ year relationship now but struggled a lot in high school, college, and even post-college to build meaningful relationships with women. There's a lot of evidence that rises in porn/social media addiction, school shootings, mental illness, and lower birth rates are tied to a male loneliness epidemic. Common theories are the internet inhibiting maturity for young men, essentially leading them to replace normal, healthy socialization with the cheap substitute of internet interaction, which temporarily sates but ultimately perpetuates loneliness, depression, and a bunch of other things.

I think it has led to a lot of toxic "nice guy" behavior and causes the stunted men to mistakenly persecute women as the cause of their misery when really it's just their own bad habits / the internet's fault.

EDIT: for the record, I don't think the answer to male loneliness is validation and gratification from women. I think the answer lies in therapy, fun hobbies, socialization and time investment with friends and family, building deeper platonic relationships, and mental and physical wellness, with romance and sex being kind of a happy side quest to all that more important stuff. But it takes a while for dudes to get there and it took a while for me to get there and I'm curious about the causes and what women looking in may think about the whole thing.