I was more interested in the flip than the question to be honest, but yes I basically agree with what you posted.
There are certain spaces where all parties implicitly consent to exposure, especially the examples you have given.
There seems to be a problem with seeing genitals in those very spaces you mentioned though, what's that about?
The problem in those spaces is in seeing genitals
of the opposite sex.
When a male goes to a "men's shower", there is an implicit acknowledgement that they may see the genitalia of other males. It's part and parcel of the space itself, where multiple people being nude while bathing is a fundamental element of the area's functionality. So those males who make use of the shower are aware ahead of time that there are likely to be other males in there who are likely to be nude. By using the facility, there is an implicit consent to 1) seeing the genitalia of other males, even if they don't really want to and 2) having their genitalia seen by other males, even if they don't want to. As individuals, they have the ability to avert their own eyes if they don't wish to see another male's wedding tackle, and there's always the option of themself with a towel if they really don't want their bits seen. But by and large, there's a fundamental agreement that this is a space where other males are likely to be naked as well, and that such nudity is appropriate in that setting.
It's a bit different, however, when the facility changes the rules without the consent of the customers. If that same shower facility unilaterally decided that the "men's showers" are available to all sexes, that changes the dynamic.
If all of the males who are used to using that facility are fully informed of the change, and fully acknowledge that this is now a unisex facility, then they can make a decision about whether or not to use that facility. They can make a decision about whether they are comfortable seeing naked females in that space, as well as whether they are comfortable being seen while naked by females.
But if they aren't fully informed, and suddenly there's a naked female walking through the area... that's likely to cause some concerns. If the male customers are told that the female is entitled to use that space because they 'identify as a man' that's also likely to cause some discomfort. It breaks the pre-existing social agreement with respect to the expected dynamic in that space.
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I'll also add that regardless of the "feminazi" caricature, virtually all feminists and non-feminist females understand and fully acknowledge that males and females are NOT physically and biologically equal. There are objective and real differences in the anatomy of males and females. Males are larger, stronger, and more aggressive. One might question how much of the aggression is socially instilled, but at least some of it is a direct result of testosterone acting on the body and brain. Testosterone is a steroid; steroids increase aggression. It is known.
So the swapping of sexes may still lead to the same principle of where it is and is not appropriate to see other people naked, as well as which sexes are appropriate in which scenarios. But the actual impact on males and females is different.
Males have a higher rate of violence and sexual aggression. They commit more violent crimes, perpetrate more domestic violence, and engage in more sexual assaults and rapes than females do. Not all males by any means, not even most males. But significantly more than would be found among females.
So if you take any random set of strangers, one male and one female, they will represent different levels of risk. A male will have a higher likelihood of being a danger than a female will. When you add the physical disparity into the mix, it ends up being quite unequal.
A female has a
low likelihood of assaulting another female, but if that female does assault them, given that they are of
relatively comparable size and strength, the victim has a
reasonable likelihood of being able to fight off their attacker and defend themselves.
A female has a
low likelihood of assaulting a male, but if that female does assault them, given that the
disparity in relative size and strength, the victim has a
very high likelihood of being able to fight off their attacker and defend themselves.
A male has a
moderate likelihood of assaulting another male, but if that male does assault them, given that they are of
relatively comparable size and strength, the victim has a
reasonable likelihood of being able to fight off their attacker and defend themselves.
A male has a
moderate likelihood of assaulting a female, but if that male does assault them, given that the
disparity in relative size and strength, the victim has a
very low likelihood of being able to fight off their attacker and defend themselves.
Think about it like Pit Bulls and Papillions. They have unequal levels of innate aggressiveness, as well as unequal levels of strength. The likelihood of a Pit Bull being an aggressor is much higher than the likelihood of a Papillion being an aggressor. But in the event that they do start something, two Pit Bulls have an even chance against each other, two Papillions have an even chance against each other... but in a fight between a Pit Bull and a Papillion, the smart bet is that the Papillion is going down pretty fast.