Fairness is not the only issue. Particularly at grass roots level many women will be excluded because they won't share changing facilities. This could be due to religious reasons but also because many do not accept that TWAW and their privacy and dignity will be breached.
2021 November 5, Debbie Hayton (@DebbieHayton), Twitter[4]:
If the usual suspects really did think that TWAW, you'd think they would dismiss our comments in the same way that they dismiss what women have to say.
2021 November 18, Rhymes With Orange (@with_rhymes), Twitter[5]:
If we actually don’t know why some people are men and some are women how can TRAs say with such absolute certainty that TWAW?