Beyond what others said, back before prohibition, drinking had gotten out of control. There were a lot of severe drunks causing problems absolutely everywhere. Prohibition was somewhat popular when it began because drinking had become an actual problem.
A lot of laws were being passed before prohibition passed, and those are the same laws you see today.
As an aside, I remember a time when inflation was the big porn shocker tag. Now it's anthro/furry/femboy/sissy etc. Literally anything except a human woman. I don't know if it's just trends, but it feels almost like it's a conspiracy, but that's crazy, right?
The only real complaint I have is people not tagging their shit properly. I have all the requisite tags filtered, I shouldn't be seeing a surprise micropenis on a maid, but it's a regular occurrence because people are lazy these days. I remember when people would get into flamewars over tags. Tags are not just for searching, they're for filters too. How would you feel if someone failed to tag guro, as an extreme example? And it showed up in your porn? Ah well, the new generation sucks, as with all generations.
C'est la vie