What you don't understand is it doesn't have to be the "main" reason. Physical capabilities still somewhat change how good a player can be, especially FPS games. Reaction time, hand-eye coordination, muscle memory, etc all play a part. As I said my post above when you are trying to be the best of the best, minor advantages can be the difference maker.
Now if we are talking about why there is a lack of women representation at the highest level of competitive Valorant I do think genetics play a small role BUT it's not even close to the main reason why. The main reason is numbers. The number of women Valorant players is lower then men, and the number of women valorant players who have aspirations to play professional is significantly lower. To see an increase in numbers the social environment around women in gaming as whole needs to drastically improve.