It is a common 'argument'
It goes that
Su cessful sports people have certain natural advantages
Basketball players are tall
Gymnasts are flexible
Weightlifter are str9ng
Etc
We do not say that tall women are advantaged when eg playing rugby and so should not be allowed to compete
We say well that's the way it goes
Therefore women who have the natural extra height strength power etc due to being male should not be singled out
Sport is intrinsically unfair as all people are born with attributes that help or don't help and so men should be allowed to compete against women as its hardly their fault they were born with a bit of extra dick and all that goes with it