Whatever. Hand them out like sweets. The horse is long gone from that swinging stable door anyway.
What must be acknowledged by this person and everyone else involved, is that when the boundary was allowed to slide from transsexual people who had gone through full reassignment surgery to including Pippa Bunce, Danielle Whatzit and those who enjoy recreational cross dressing, it ceased to be possible to allow female only spaces to be accessed as part of transition.
Throw GRCs around like smarties. Ensure everyone can dress as they want and call themselves what they want and have whatever they want on their legal documents (I think that's nuts but whatever), and absolutely they should be protected in law from harassment or discrimination for doing so.
And then create third mixed sex spaces, and specify protection for female only spaces for female born people and be very clear about the difference between sex (unchanging fact) and gender (it's all yours, vary at will), because at this point there is nothing else to be done. That genie will never go back in the bottle.