Do you have to contribute funds in order to be a member?
If so, I'm not surprised they answer the question Can I be a member and disagree with Fawcett's position? with Of course. They obviously feel they could lose members (and revenue) here and judging from some of the replies on this thread, they would be right.
Also,
Many trans women currently use women’s changing rooms without comment, but GRA reform has opened up the discussion about people’s feelings on the matter
I am glad they put it this way because I am tired of hearing that transwomen have been using these facilities for years "with no problems" - just because they haven't heard anyone say anything. Not many women would say anything - especially if the person concerned looked big and intimidating - but that doesn't mean there's not problem, just that they are either oblivious to it or they don't care.