That is one set of choices. You'll get some people and you won't get others. But by picking cartoonish examples, you're failing to grapple with the real choices that platforms have to make all the time.

There is no such thing as a broad policy, not in practice. If you need to get a group of people to make consistent decisions about what porn is, and a much larger group of people to understand where the lines are and feel your judgments are fair, then you'll need extremely detailed polices.