Well... I HOPE that it's not (just) about saving face for the Olympics or for some foreign Authority.
The long accepted rule of censoring the genitals has created lots of problems and distortions. That's inevitable when some "boss of japaneses power" just sat there and make up (semi) random rules.
If there's going to be censorship, I argue it should not be a fixed rule saying you can't show X (let's X being pubic hair, or open vagina, or high school, or outdoor nudity/sex). It should be a light-touch, specific issue-focus solution.
Pick an example, Japanese are not making enough babies. That's a real social issue. I think it's primarily an economic issue (20-30 years olds lacking economic confidence) but there's a cultural and carnal aspect to it too. AV and other otaku entertainment is doing too good a job satisfying our biological needs. Here I put blame to the mosaic genitals rule. Even married couples think that sex is dirty and disgusting. I am afraid within 10 years or less, VR+ technology will be better (meaning more pleasurable) than real intercourse for most people. I think it will be a disaster for humanity.
I think shrinking population, young men and women losing interest in dating, marriage, sex, making babies and raising kids and even losing interest in opposite sex altogether, is a far more serious problem than looking bad to foreigners due to JAV. And some genre of JAV is partly responsible for validating or promoting a otaku lifestyle that JAV is not just a fapping aid or distraction or "transition stage while I keep looking for real sex with a real woman (and eventually a wife)"
So ... I admit I am a fan of kinky sex, e.g. anal sex. But it's not right that kinky, or criminal acts (such as incest and r***) become too common, too popular, too dominant. If too many boys/young men got the wrong idea about what is morally right or wrong about sex, maybe there need to be some top-down control.
