Buck Angel argument is so dumb
'women only space' does not mean 'women must use this space' nor does it mean 'all women use this space' nor does it mean 'women may not use other spaces' nor does it mean 'all people must use spaces specific to their sex'. It is internally and logically coherent. It means only women can use this space. There is no illogicality
The argument used by gender critical rad fems is that changing gender presentation does not change biology. It is frequently said that every cell remains xy or xx as appropriate.
For the purposes of this argument I am not in the least bit interested in whether trans men like BA pass (he does)or whether he would ever want to use a ladies loo (he wouldn't) But if you are arguing only biology matters then BA is still a woman. So your assertion that "only women can use this place" includes him. There is nothing logical in your argument other than you are trying to find something which alllows you to exclude both BA and Zuzanna.
Make your mind up - if only biology matters what he looks like is irrelevant by your (rad fem you) definition of what a woman is. Or are you (rad fem you) now saying , actually biology doesn't matter when the biological woman presents as a very macho man?
Except biology does matter to you in the case of Zuzanna despite her very feminine looking, penis- free body.