Perhaps more men seem to be getting sucked into manosphere / alt right circles since gamergate. But the US isn't homogeneous either.

At the same time perhaps in some circles men are coming to a better understanding of patriarchy and feminism and moving more liberal. So there is a growing divide but unfortunately in raw numbers there is a slight trend toward conservatism.

Still, I think the entire graph and the data, semantics, and methods behind it deserve scrutiny. Like, exactly what views are being considered? Are there more women becoming socialist? Or socially progressive? Or what?

Have you not noticed the rise in groups like Proud Boys, Patriot Front, and the Three Percenters? Patriot Front has people on overpasses waving signs in my area and they are in the news several times per year for marching in different cities. Just the other day they were recorded in New York City, unable to figure out how to swipe metro cards to get into the subway, so dozens of them charged on through without paying, so it isn’t like they are staying holed up in rural militia compounds out of sight. Far right extremism is both active and on the rise locally and globally.