Why does Instagram allow female nipples that are clearly visible through thin clothing, and allow breasts with the nipples barely pixellated out, but the moment a woman posts her bare exposed nipples that’s suddenly against the rules?

For the record I think nipples should be allowed, but the Instagram rules make even less sense than the general social norms that consider female breasts to be offensive in the first place.

I’ve also seen photos with net or rope bikinis that show some of the nipples and other photos that show the areolas but with a dot drawn around the nipples. It seems almost as if you can show 99.85% of it but once you show the whole thing you get banned.