The problem is that if we believe that anyone who says they are a woman is a woman then there is very little to stop any male prisoner announcing they are woman and requesting a transfer.
And who is going to be the gate keeper? Who is going to be the person who decides? Who is going to be willing to put their neck on the line and say 'this person is fine, they can trot off to a female prison'?
Anyone who doesn't think that she men are capable to pulling the wool over the eyes of officials is naive in the extreme. There are some very very sick individuals out there.
Just because your DH, DF, DS is lovely, and all the transwomen you know are great doesn't mean that all men are.
I'm sorry that we have to treat men this way, but if men would just stop killing and raping women then we wouldn't have to.
Not all men are rapists - all rapists are men.
Not all men sexually assault women - I've yet to meet one woman who hasn't been sexually assaulted, from a bottom pinch up to rape.