You aint left buddy, youre a clinton liberal who thinks hes a leftist
There might be biological differences, but you know who else has biological differences? Women and… other women. Like, some cis-women just have naturally higher levels of testosterone, or are taller, or have naturally greater lung capacity, and so on. The idea of “fairness” in sport is bullshit on a base genetic level (it’s also bullshit for economical reasons related to who can actually afford the training and equipment, but that’s a different topic), and we’d probably be better off if we just give up on it.