It's for a variety of reasons: if we're talking about Japanese manga than porn is illegal and so the only way they can sell it in stores is by publishing it censored like mosiace or black bars, some artists are bad at drawing genitals and it doesn't match with anything else they've drawn so lightsabers, another factor is some readers find looking at the genitalia "gross" and "offputting" (I myself pick censored over uncensored cause it usually looks gross and ugly and doesn't match the style of the artist), the regulators believe that if the genitals are censored then "technically" it's not porn and they don't wanna let people "give away" porn.
this makes no sense to me. like it’s porn. why would it be censored. i understand censoring to have a pay wall, but this whole website is illegal as hell LMFAO. and anyway when you DO pay for some things, it’s still censored? so weird