The IOC or Paris Boxing Unit do not require competitors to be XX or to have female levels of testosterone to be eligible to compete in the women’s category.
Those objecting, do not think that this is fair or safe. The overwhelming majority of sporting organisations, including athletics, swimming, and cycling, have implemented 'transition before puberty' and 'testosterone below 2.5nmol/L' rules for eligibility into the female category.
Mark Adams is defending the position that identity takes priority and eligibility to participate in the female category should be based on identity.
His statement on 'returning to the bad old days of sex verification' is disingenuous:
Sex verification does not require medical doctors to inspect genitals before a race. It requires a cheek swab / blood test which is no more invasive than peeing in a cup for the drug testing.
As is his statement on women with high levels of testosterone:
Healthy males have between 10 and 35 nmol/L of testosterone, healthy females have between 0.5 and 2.4 nnol/L. To say anything else is a distortion of the truth. Anything outside of that should require medical sign off.
The boxers and footballers in question have not claimed to be XY, to have testosterone levels below 2.4nmol/L or to have transitioned before puberty.
The Court of Arbitration of Sport concluded that it is reasonable to have restrictions to preserve fairness and safety of the female class.
The IOC, Paris Boxing Unit and FIFA are out of step with this conclusion and out of step with the major sporting organisations.