This is the crux of it for businesses. If they are going to have policies that make intimate spaces mixed sex then they need to be very clear to their customers this is the case.
I agree. Pretending that basing segregation on gender, doesn't then result in mixed sex, is deceitful.
If people are going to dismantle women's protections, at least have the bloody balls to say so.
Pretending that swapping your gender identity means that your sex is irrelevant, is basic gaslighting.