Are you clear on the difference between sex and gender? Some people think prisons are supposed to be segregated by sex, with gender being less relevant to the purpose of protecting females.
Doesn’t really matter what they identify as. If they’re male they should go in the male prison. Identifying as something doesn’t change the physical attributes that make males a potential threat to females.
What a lot of people don’t understand about this flavor of feminism is that it isn’t about gender, or directly about trans people. It’s about the primacy of sex in defining and defending women as a class.
Social roles, gender, clothes, appearance, identification, personality… none of these things are what makes a woman a woman.