We don't have a masculinity crisis we have a femininity crisis. Lots of women trying to compete with men on their field and are upset they can't. So they invent institutions that forcefully inject themselves into masculine spaces.
I think it's both. Lots of men have become more feminine and lots of women have become more masculine. The interesting question is why
More men have become increasingly masculine rather than feminine. The dominant archetype in today’s society is the animus archetype. While some men are also becoming feminised, the vast majority lean in the opposite direction. I have observed far more women adopting masculine traits than men adopting feminine ones. You should read this: https://appliedjung.com/the-archetypes-of-the-anima-and-animus/