To the opposite point: the reply says "women are failing cause the event design is biased" and also "women could do perfectly well if not for society making them not play"

Which one is it. If society didn't hold back women, would they win or not? Arg 1 says no, arg 2 says yes.

If the event were fairly constructed, arg 1 says they'd win, arg 2 says they still wouldn't.

So you've identified two possible problems; if the first is true (events are inherently biased) that completely proves that social discrimination is irrelevant (because the event design is so sexist women can never win)

If the second is true (women only lose because society holds them back) then the claim that the events are inherently biased (enough to totally prevent female wins) has to be false because either they can or can't win ex social bias. Qed either claim being true forces the other to be false, the args are contradictory.

EDIT: yes, I may be falsely thinking point-wise rather than distributionally. Both of the factors you mention do push women out further in the distribution of placements