I'm not sure if this been said to you or anyone. Any marketized adult material originate in JP has laws applies that censorship to genitalia are mandatory, at least only 70 ~ 90% are allowed to be visible, either as clear vision or silhouette. (There seem to be on going debate within the G. regarding these 'freedom of expression' to remove the censorship entirely, which I don't know much how things goes)
You can expected any game or doujin from JP to have censor in their crotch, be it blackbar(s), light-saber(classic) mosaic. Uncensor patch however, is entirely different matter. Most JP uncensor resource are also done by 3rd party, rarely that the author themselves dispense the patch.
I also wonder if there's any law prohibit them from doing such things. Cuz I sure as hell don't want to be fine or jailed just because of pixelate problem.