It really is though. Regardless of reported numbers a lot of people view pornography, and when it's that harshly censored people don't really get a clear view of human sexuality. If you were raised in a society that exclusively allowed BDSM themed pornography, odds are you would think that's normal. Your only insight into human sexuality is women (or even men) being tied up and objectified (going to say I have nothing wrong with BDSM, that's a separate discussion) and over time you'll likely think that is the normal kind of intimate interactions.
A lot of Japanese Hentai and Porn is predicated on young women being basically raped, or at the least sexually assaulted--and discovering that they like it. The only insight a lot of people have therefore, is that women want to be sexually assaulted, that they like being groped and secretly want to have sex but are just too shy. It's probably easier for people in someplace like America to say that seems silly, but we have much more open access to these things. Repression is problematic because it doesn't allow you to get the full context of things, and you end up developing unreasonable or unacceptable views on things. If Japanese men and women could watch uncensored and tastefully made adult films, rather than what they have access to now, it would almost certainly give them a better understanding of human sexuality and intimacy.