eatingonlyapples non-binary people still have a biological sex. If they want seoerate wings or prisons then I'd be happy for the. To have that. trans men are entitled to ask to go onto male prisons. They are unlikely to be a risk to the men there. They may be at risk which, personally, I would not want, but if they chose to go onto male prisons that is there choice.
Maybe we could have a trans wing for trans men.
But the issue is not trans men. it is males in prison identifying as women and wanting to be housed with female prisoners. That is the issue for females in prison.