I very much hope that if my daughter were to experience gender dysphoria and decide to present according to male stereotypes, she would still have the integrity to not impose herself into male spaces. Sport isn't really an issue because let's face it, in the vast majority of sports Trans Men cannot be competitive against males.
Everyone with more than 1 brain cell knows that males have inherent physical advantages over females. I am as tall as my husband (who does no exercise and would freely admit he's unfit) and weigh more than him but he can lift me and in a physical fight I would be seriously damaged.
Females are not here to make males feel better about themselves, girls and women who have trained and sacrificed to be the best in their sports category should not be expected to stand back and let a male win so that they can feel like they 'fit in'.