Respectfully, disagree entirely. They add pointless, arbitrary censors to porn that is acceptable to everyone else in the world, to achieve nothing. Porn in Japan is still only available to adults, and censor or not people still buy it, so the only thing censorship does is make the art shittier.
Porn industries are flourishing in every corner of the world, all without censorship, all the greatest hentai games we know, Subverse and Summertime Saga, biggest earners in the industry are based in the US. Academy34 - Ukrainian, also uncensored, but earned so much they had to change character names cause it's getting attention from actual Overwatch developers. Pornhub - United States. Xvideo - Czech. All show porn doesn't need censorship to be successful like in Japan.
Any way you look at it, Japanese censorship is straight-up garbage. Plain and simple