That Act (The Gender Recognition Act 2004) had nothing to do with marriage or pensions
If there were a prize for the least well informed, most arrogant assertion about the GRA2004 then you would win hands down.
You do not have even the most basic understanding of the legal background and basis for this legislation, yet you come here trying to lecture women who have been steeped in this subject for years if not decades.
I suggest that you start researching the subject and stop wasting your time playing with crayons and colouring-in books supplied by Stonewall and the Good at Losing in Court Project.