I think men need to understand that women who earn more or influence more are simply becoming their best selves. It has nothing to do with reducing men.
A man being his best self has nothing to do with how his career is going. There will be ups and downs, that's what life is about. Men often ignore their nurturing and comforting talents within the male paradigm. Some of the best moments in my life are from being supported emotionally by my father and brother. That stuff is better than gold.
For me, the things I need most from a mate are covering areas where I am weak. I can bring in a nice salary so I don't really require or emphasize that in the men I'm with. What I do want is emotional support and planning ahead for us, making sure we have a rich (in types of experiences and connections to others) and memorable life.
I'm just one example. So there are still assignments men can take in relationships, they simply need to be more open to changing assignments.