If science has shown that men cannot be considered to be women for the purpose of sport, then for what purposes can they be considered to be women?
For the purpose of accessing women's lavatories and changing rooms? For the purpose of accessing women's prisons? For the purpose of getting a bed on a women-only NHS ward? For the purpose of accessing women-only and lesbian-only spaces?
Should women using women-only facilities not be consulted and asked if they wish to share their space with someone who, for sporting purposes at the very least, is male? If some people are deemed male for the purpose of sport, should not that definition of their sex carry over into other areas of life that are organised on the basis of sex?
Can you really be a man when it comes to competing in a swimming event but expect to be accepted as a woman when you want to go to the lesbian-only club night?