Do you know how they enforce the exemption? As people have pointed out someone's birth certificate will say female. Where do you go from there?
The real unsquareable circle is privacy. Not GRC or no GRC, self-ID or gatekeeping.
That's what I meant when I said I'd need far more substantial detail before I change my vote.
Let's say you're advertising a job to work at Rape Crisis. It's advertised on the single sex (XX, not legal sex) exemptions. You'd need a method to confirm applicants meet the requirements but privacy means you can't have one.
Additionally, as we all know EHRC, which provides guidance on the exemptions, has been thoroughly captured and had to be dragged kicking and screaming to remove parts of guidance it put out that actually went contrary to legislation.
A tiny paragraph in a manifesto does not address how Labour plans to surmount these issues and, since the party and its candidates seem determined to avoid interrogation on this as much as possible, my vote's staying in my pocket.
But - it's still a concession. It's still signalling awareness there's a problem. This is a good thing.