So I haven't fully read this thread, I am just going to share what I see happening in my nieces, nephews, my own kids and those in their social circles. Not everything I mention is a super powerful force, but it is part of what I see funneling young men to dark places.
1. There is a tremendous swell of positive mainstream content featuring empowered young girls/women. Barbi shows an empowered woman navigating a less than perfect world, etc...
2. There is somewhat of a vacuum of positive mainstream content featuring young boys/men being good and navigating the world around them. Even something like Deadpool vs Wolverine that likely appeals to young men more than young women, A) not exactly a model of behavior and B) not applicable to the modern world a young man lives in.
3. Most families have both parents working with kids of all genders spending more time alone and more often than not, that time is spent online
4. Pandemic isolation became a multiplier to the above context and drove more kids to be even more engaged online
5. These kids basically are free to allow their mind able to wander an online world without supervision. Its the psychological equivalent of dropping your kids off at the edge of Hong Kong and telling them to be home by supper.
6. For boys, that online world is full of bad actors who are willing to fill the vacuum of parenting and mainstream content shaping to influence how boys and young/men think
7. Young boys/men who are tolerant and respectful as individuals are being lumped in with all the young boys/men who are not and treated as part of a homogenous "Patriarchy". They feel dammed if they do and dammed if they don't and it reinforces the bullshit getting injected into their heads online. At that point, the young men are left to wonder -- is it really bullshit?
Basically, a lot of young men are being abandoned into a confusing vacuum. And as they try to make sense of it, people who are looking at either making a buck, countering the feminist movement or both are happy to step in to fill the void of parenting and mainstream reinforcement to give those young men an ethos and purpose.