Japan is one of the most strict sex and gender role confirming societies in the world. The students I had to teach this term ranging between ages 19 to 23 still do not know how a male/male homosexual relationships work. You get literal questions such as 'but which one wears the women's clothing at home?' and expressions of disgust at the idea. Fiction and actual homosexuality are two completely different things. As is hentai and actual sex. Some of the young women I have to suggest to that getting married ASAP to avoid being sexually harassed at work when they become an OL might not be the best way out, have never considered that this is not a universal occurrence all over the world.
That said there Are millitant feminists in Japan, and when they're not fighting to stop companies from making high heels mandatory for female office staff, they're being brainwashed by US ideology. You see, in Japan, white people = America. And since they blindly copy anything the US does, they copy the ideology. Except like with everything they copy they have no real understanding of the context or purpose. The main publications on sex in Japan still claim biological superiority of Japanese people and undiluted bloodlines.
I won't get into things like dansou and josou (crossdressing) but suffice to say, a few screeching troons in Japan do not one America make.
[Edit: spelling, clarity]