A male who has had their penis removed is a male who has had their penis removed. If they have been through any part of virilisation they are stronger and are a greater physical risk to any female. Even if they have not been though virilisation they have advantages. We already know this from seeing CAIS male people's development.
Why should any female accept a male who presents an increased physical risk to them in their single sex space?
And I am very happy to discuss advantages that some female people have over others. I will be very happy to link up all the research so far about this.
Also, male people have male physical cues that people recognise. It allows us to identify who is male and who is not. The prevalence of facial surgery is low. Even with facial surgical modifications, the skeleton does not lie and nor does gait.
Why should any female accept a male in their single sex space if they are likely to be distressed at detecting that they in the presence of a male?
It doesn't matter whether any male has their penis removed. It doesn't make them any more female. It doesn't give them any ethical right to be allowed into female single sex spaces and it never did. Once a male, always a male.
By the way, if a male loses their penis due to injury or disease, does that make them female? Yes? No? What are the differences between a male who has no penis due to injury or disease vs one who has elected to have it removed for cosmetic purposes? What exactly are the differences?