I don't understand how you're not up in arms at the prison service for somehow not spotting that blatantly obvious fact.
Because there isn't a blood test or nice little birth mark stating 'genuinely convinced of being internally female despite outward appearance' and 'pisstaker'. Nobody knows. It's not possible to tell, you go on the subjective opinion of the person. Who may be lying. Or may not be. Is that a fair risk to ask women to suck up?
Facts also must be faced that being genuinely convinced of being internally female, and being properly trans doesn't mean the same person isn't also a sex offender. The two things aren't mutually exclusive. Is that a fair risk to ask women to suck up?
How do the women who will be imprisoned with this male bodied person and expected to live/toilet/shower alongside them feel about it?
Have they made an informed choice regarding their safety, privacy and dignity?
Have they seen their interests fairly weighed up against the interests of the male bodied person who wishes to have access to them?
Do they consent?
Does anyone give a fuck if they do or not?