"Thing is, sexism not only denies them success within those fields due to societal stereotypes that women aren't as good at sports"

This is a stereotype?
Do you honestly think the NFL or NBA would be 50% female, or even 5% female, if not for people's attitudes? Do you honestly think track and field world records would be held by 50% women, or even 15% women, if only society were unbiased?