Feminists can't speak out against men competing in women's sports; it'd bring all of feminism down.

Feminists can't say anything against fake women (actual men) coming into women's sports and walking away with all the medals, the scholarships, the endorsement deals and such, because they've been telling us all -- for DECADES now -- that women can do anything a man can do... and do it better.

If feminists were to demand that pretend women get out of women's sports, they'd be admitting that feminism has been a sham all along. After all, these pretend women are actually weakened men! Men with purposely reduced testosterone levels! And they're running roughshod over women in all the sports to which they gain entry.