Indeed. And we should never have played along. It was always the wrong question. It's led to all kinds of incorrect nonsense about DSDs being spouted, and all sorts of other irrelevant stuff about social roles.
The issue has always been transwomen claiming to be women and wanting to be included in everything that is reserved for women.
The question should have been "what is a transwoman", and why should they be included in the category "women". We should look at the characteristics of women that TW do not have:
Female reproductive system (whether or not a woman is fertile)
Female gametes
Female hormones
Female anatomy and physiology (skeleton, heart, lungs, blood, voice box, skin, hair pattern, muscles etc)
Female genotype (and yes, that does include atypical ones)
They do not have a single one of these features that make us female. So what do they have that makes them female? Saying "cos I say so" has never been enough to claim you're anything, despite what Stonewall say.
If more people had pointed this out instead of getting drawn into rubbish about whether infertile women or postmenopausal women are really women, it would have put the focus back on the male-bodied people claiming they're women. It would also have made more people realise that the vast majority of TW don't have surgery and still have male reproductive organs. A lot of people still think TW have had a "sex change" and hormones, which has given them female anatomy.
Wanting male attention, liking how you look in a dress and being sexually submissive don't make you female.