Why are women's nipples considered unacceptable anyway? It seems really sexist in my opinion to say that male nipples are acceptable but female ones aren't
It's just because of sexualixation and prude people pressuring the fuck out of those platforms. Although a bit unnecessary imho I don't mind seeing a tiddy on insta, they'll have to add a nsfw tag tho. Insta is prob going to decline into even more onlyfans advertisements
But as it's a gradual transition and cleavage, side-boob, underboob, straps and pasties have become normalized, the nipple is the only part left to define as the subject of the "issue", as it's the most distinguishable, visually separate and definable part.
The conservative prudes would prefer a more comprehensive ban, but struggle immensely in legally defining the line of "okay/not okay" in a court of law. They find it much easier to enforce certain clothes as legally obligatory for women, but there's very little support for that kind of oppression in most parts of the world.
In a decent number of countries, they are pretty relaxed. You go there, you see nipple (or dick) for 5 seconds, it's notable, then it fades into the background. People are just anal-retentive about it because of religion and family culture.
Because most women choose to keep tops on and most cultures find them sexual. You can go topless in 95% of places in the West that allow shirts off. Women choose to keep the tops on.
I know a trans woman who got told pre-transition that she looked too feminine to be shirtless at the beach and that she had to wear a t shirt or leave by a coastguard or policeman (I can't remember which it was at this point)