It is.
I really don't think this letter would have been published if decisions had not already been arrived at.
The genie is out of the bottle, now. The grown ups have finally entered the room, someone has pointed at Isla Bryson and said 'that man is wearing pink leggings'.
Trans people can be assured that their rights not to be discriminated against are still enshrined in law, as they should be, so they have that extra protection.
Transmen will gain some rights that were created to address disadvantages faced by being born female.
Transwomen will lose the right to be included in single sex exemptions for women.
A fairer and more equitable state, I would say.