I am convinced that if #metoo was 10 years early, before I developed self esteem, I would have FOR SURE fallen into the manosphere. I just wanted to be accepted while popular culture regularly reminded me every day that the people I care about (mostly women, I had no male role models) think I'm evil.
I knew I had problems but I wasn't evil so who would I have listened to? Probably the group saying I'm good and cool and strong just for existing. The group promising to help me fix my self esteem.
I get it now, I know they're not saying ALL men. But the problem I still have with the popularity of that hyperbole is that it alienates the most vulnerable young men.
I don't have a solution to suggest. Just wanted to share my experience to support your stance.