@theilltemperedamateur
"Single-sex spaces for safety purposes only operate as intended if we base them on macro-level data. Otherwise we would have to assess each person individually for risk level, which would be impossible."
True.
"It's not up to women to prove he's a risk. It's up to him to prove he's not. How? 'I don't pose a risk because I wear women's clothing'? Ridiculous."
The author isn't arguing that clothing choices reduce risk, nor are they asking for individual, person-by-person assessments. The argument is about demographic risk. Medical organizations don't define someone as trans based on clothing. It is verified through factors like phenotypic expression and biological markers.
The question is whether the macro-level data for that verified demographic sub-cohort matches the macro-level data of the general male population.
"Plus there are other reasons for women to want privacy from men. In which case, what matters isn't what he wants. It's what the women want."
If the boundary is strictly about privacy, then the statistics, the risk assessment, and the demographic data don't matter at all. Which is fine. You can simply state that information is irrelevant, then the debate will move to what is relevant for you.