Can someone please tell me why leftists insist on allowing biological men into women's sports?

Seriously, The US women's Soccer team just challenged Wrexham men's team and they mopped the floor with the women's team, The women's team was beaten 12-0.. There is no good reason to have men competing in women's sports PERIOD.

News article
https://www.marca.com/en/football/2023/06/03/647a59f322601d3b3b8b45ed.html

Video

Can someone please tell me why leftists insist on allowing biological men into women's sports?
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