Ignorant? You know what's ignorant - believing that people in this world, men and women, have no ulterior motives and agendas for the causes they "support". Since you like using Megan Rapinoe as your "example of a female sportsperson that knows sport and so must be right" - let's use her as the example. Rapinoe is at the end of her career, has made her millions, never herself had to encounter transgender athletes potentially compromising her career or earnings - so easy to jump on a cause for your own promotion/agenda. Rapinoe has already stuck her foot into the political world as a "champion" for LGBTQ rights which is completely fine - but you really think it's inconceivable that her support of transgender women competing in competitive sport is nothing more than political posturing? It's the same with Candace Parker - funnily enough another gay woman who made her fortune thanks to being able to play basketball as a woman vs other women. Billie Jean King, another gay woman who made her fortune thanks to being able to play tennis as a woman vs other women. You don't see a pattern here? This is more about ideological stubbornness than it logical and rational reasoning.
I'm completely done debating this with you - you're not in the majority on this messageboard let alone society. Megan Rapinoe, Candace Parker, Bille-Jean King and you can have your opinions and be as offended as you want - it doesn't mean they and you, are right. Goodbye.