I'm glad this chapter shed a little more light on Arata's situation; people were dunking on him pretty hard after the first chapter but I get the feeling that he's just as tired of going through the motions as Yukako. He can't even hang out with his 1 friend at work without someone making a big deal out of it.
Arata's situation illustrates something feminism knew very well in the 60s (before it got corrupted and rotten) that is: men are also victims of the capitalist-patriarchal social establishment, and suffer because of it as much as women.
I wouldn't go that far. Some men eventually suffer, because it's a "dog eat dog" system and those at the bottom of the hierarchy are not in a good position, but most of the "capitalist-patriarchal social establishment" is heavily skewed in their favor. They just have to navigate with the flow and everything becomes a lot easier. That Arata guy just has to drop his friend (who he uses to make himself feel better anyway) and pretend to be a predator among predators and everything will get better. The system favors men who follow its "rules".
A woman, on the other hand, has to struggle a lot more and abandon a lot more to be acknowledged. And even then the system is actively putting her down, so it's never enough.
So, don't put the struggle of men and women on the same level.
Koreans are obsessed with bullying. It's endemic in Korea's schools. There's so much pressure on the students for the exams and there's basically no consequences, so it's become a cancer there. Moreso than in Japan.
Currently, some K-Pop stars, or well known actors are losing their job because stories of them being bullies in school are surfacing. That's their #metoo. And it's ugly.