Most men have experienced the stifling gender norms that force them into a box: they’re not allowed to cry or show any feeling other than anger, there’s no such thing as non-sexual touch or romance, women don’t like sex so trying to get close to them is inherently rapey and goes against their desires.
Feminism fights against that trap, that men are only men if they check certain boxes. That’s what’s toxic: telling men they’re not allowed to be certain ways.
So yeah, feminism does have a lot to offer men. Toxic societal expectations are bad for everyone.
“Feminism” is like philosophy in that over time it makes certain wins, and the discussion around that topic gradually sheds the label.
In the same way that ancient philosophers were establishing the disciplines we now call mathematics, geometry, and physics, or early modern philosophers were establishing what we now call economics and political science, and mid-century/postwar philosophers were establishing what is now called computer science and information theory, the history of feminism is notching wins and making them normal:
Today, many of us who were alive when these rules were in effect think of them as totally backwards. Nobody is seriously advocating for a return to denying women the right to have their own bank accounts, or giving husbands the right to rape their wives without consequences.
But the cultural understanding of the meaning of feminism rarely considers preserving past wins, even recent wins. People only think of it as fighting for something in the future.