Then why play the game?
For the exercise?
They defend by changing the rules or the vocabulary or outright lying or by calling racism, white supremacist,fascist, etc.
My parents taught me to never argue with insane or drunk people and never play if the game is rigged. So far this has been good advice.
When the biological women refuse to participate in athletic contests with biological males that feel like women, then there will be winning.
Well, as I said,force them to defend the indefensible. Sure they can change the rules, cheat etc, but they can’t convincingly overrule common sense. Half our student athletes are women. Many of them and most of their parents vote and I’d love for them to hear Elizabeth Warren explain how favoring trans would benefit their daughters. Bottom line they might convince extreme liberals but NOT the vast majority of voters.