I ask once again: if you think that sex-segregation is the "correct" way to go, then how do you account for trans men? For example, which of the (now-mythical) changing rooms should trans men use, in your worldview*?
I addressed this multiple times in this thread. Additionally, I've reiterated my view on bathrooms and changing rooms multiple times. Perhaps if I try just once more, you will actually comprehend, and will then stop trying to 'gotcha" me for not typing out the Gutenberg Bible every single time the topic crosses you mind and you feel compelled to boil it down to your misrepresentation of my views again.
1) Toilets, I don't care. I prefer that you use whichever toilet most rational people are going to assume you belong in. And at the end of the day, if you decide to ignore my preference, I really don't give a crap about toilets.
2) Changing rooms, locker rooms, and other places where people are routinely naked and in a vulnerable state. I prefer that they be sex-segregated. That's the whole point of them in the first place. With an eye to being realistic, however, I will consider a person who has had GRS to be honorable members of the sex that their bodies now resemble. For people who have begun hormone therapy, and are actively seeking to pass as the opposite sex, use reason. If you mostly look like a female, use the ladies - but if you've got a penis keep it covered and out of sight. If you mostly look like a male, use the mens - but if you've got boobies, keep them covered. If a person self-declares themselves to be transgender, but is not passing (for example, Seani who has a full beard and presents as a male) then use the rooms designated for your biological sex, because your internal feeling doesn't override the rights of females to have a space free of males.
3) Prisons. No naturally functioning biological penises in the female ward. That means no transwomen that have not had complete GRS. But it DOES allow transmen who have had complete GRS. This is a matter of safety for people who do not have any option at all to leave the venue. Females, regardless of how they identify, are smaller, weaker, and less aggressive than males. Even a fully transitioned transman is at a higher risk of assault in the men's ward. A fully transitioned transwoman is still bigger and stronger than females, but without a penis the risk of harm and impregnation from rape are significantly reduced. I am willing to allow case-by-case consideration of transwomen who are not fully transitioned, with significant weight given to the type of crime committed that landed them in jail in the first place. If transwomen are at higher risk in the male ward, then set aside a wing for them or find some other solution. Putting penises in lock-up with females is not an acceptable solution on the whole.
You've got only two other posts in this thread. I'm sorry if you feel you've been talked over... it's quite difficult to avoid talking over someone who doesn't talk. 
