How much effort is it to scan for porn/have reviewers informed all porn is banned? Vs. How effort is it to allow porn but have some algorithm or reviewers det

How much effort is it to scan for porn/have reviewers informed all porn is banned? Vs. How effort is it to allow porn but have some algorithm or reviewers determine what is porn but is allowed vs what is CSAM? Obviously images of abuse of a 10 year old are clear, but much more content than that is disallowed, yet you're going to get a lot of shit for taking down self-taken images of that young looking 20 year old when your policy allows porn, and if you overcorrect the other direction you'll get even more shit for not taking down images of that older looking 16 year old.