@AllTheChaos Did you not reread the part I quoted?
"usually the torso from roughly armpits down, buttocks, and upper legs - so say mid thigh upwards. There is also an expectation that men will keep these areas covered, but not so much of a taboo if they don’t, and in hot weather or on the beach this taboo is lifted for men."
You explicitly stated that there is not so much of a taboo if men don't cover their arses, and in hot weather or on the beach, there is no taboo about men having their arses covered.
You are categorically wrong on that. Almost everyone would be rightly disgusted if a man exposed his hairy disgusting arse in public.
The same taboo does not exist for women because women's arses are not offensive. This is why women are permitted to wear skirts that are short enough to show their arse, or to show their arse completely on the beach.
I would say in general, there is much less of an expectation for women to remain covered because their bodies are less offensive, and indeed, women generally dress in a way in which a lot less of their bodies are covered (for example, legs, arms, lower abdomen, arse, etc).
Even with the chest area, women will show far more of this than men do. Literally the only exception to that is the nipple, which women will always keep covered. Men can go topless, but only at a swimming pool, beach, or when sunbathing (sunbathing is a silly activity, though that's a discussion for another day). Any man who went topless in a street (for example) would look somewhat odd.
By the way... the expectation for women to cover their nipples varies greatly from culture to culture. For example, in mainland Europe, it is very normal and common for women to go completely topless on the beach, and no one bats an eyelid at this.