You are entitled to your opinion, but mine is that Manosphere nonsense is 100% about loss of entitlement and unearned privilege. With a few notable exceptions, it's white men having a hissy fit that they are no longer the de facto center of the culture - and they don't like it. A huge percentage of them are men who have been hurt in a marriage or relationship and are now bitter about that (and about all women) because deep down they thought that women were on earth to please them and make them happy and when that didn't happen, they got pissy. Now they hate all women who want to have equality, agency, and power they believe is theirs by divine right.

There is a documented overlap between the misogynists and the White supremacists, and the only possible thing about women having sexual agency they don't like is that it's not available to them for free and at their whim. Easily accessible internet porn has been around for 35+ years. The Manosphere has only been around since the mid 2000s. I see zero correlation between porn/Only Fans and the growing hatred that so many men have for women.

In addition, that young woman has said she wants to do that again, but with more men - so that seems pretty clear that it did not change her in any negative way.