We hear a lot how allowing transgender women compete in woman's competitions will result in biological (cis) women being disadvantaged to the point of destroying women's sport.
Yet, in a a swim meet between Yale, Penn State, and Dartmouth where two transgender athletes competed directly against each other the clear winner was biologically female who identifies as male but hasn't started any hormone treatment yet.
Iszac Henig is transitioning from female to male but apart from having a double mastectomy has not taken any other surgical or hormonal steps yet and is therefore allowed to compete in women's events. Hormonally Henig is still 'female' - her body is no different biologically from any other cis woman's - yet she beat a transgender woman, Lia Thomas, who began HRT in 2019.
The issue of transgender people in sport need to be discussed and all factors considered -but it does seem that the warning of the death of "women's (ie cis women only) sport" are premature.