Unless you’re able to give me ANY realistic reason why adult human females are taught to remove all signs they’ve gone through puberty
I wouldn't say that's strictly true, as breasts are pretty popular with men and society pressurises women to make them bigger.
The hair removal is a complex issue. I find it revolting that many women feel they should remove pubic hair, in the context that they'll feel ashamed if they don't, that men won't like them etc and I know some men and boys do consider it disgusting if women have pubic hair, which is also societally conditioned (bet they generally didn't 200 years ago).
But, removing body hair is not in itself a terrible thing. It's only when it's gendered and pressure is put on women via porn that I'm not happy about it. Modifying hair has been done for millennia by both men and women, and I think it's interesting that it's the norm (though perhaps less so with current trends) for men to shave off facial hair, and no one berates them for trying to please women or bowing to sexist pressures.
What's important is not policing what women do and telling them off for not making a feminist choice (although I agree that there is such a thing as a non-feminist choice, and feminism is not "about choice", it's about equality).
What matters IMO is addressing the reasons and trying to see them clearly and understand how you are and are not influenced by them.
We are all swimming in society's expectations, embedded sexism and ingrained misogyny. That doesn't mean you can't become aware of it, examine it, and make considered decisions with those forces in mind.