edit: alleged/unpublished … she failed some gender verification tests of IBA that disqualified her there, but met the IOC’s criteria. It is what it is. They might keep or change the eligibility rules in the future, and that will be IOC’s decision, much as it was IBA’s.
A Genetically-born XY person with fully developed female-organs and no visible male-organs hence failed to go through male-puberty remaining for all intents and purposes female-adjacent.
The Olympics committee via Scientific investigation have determined that Swyers disease persons are essentially female from birth including physical characteristics hence an exception has been made to be allowed in the Olympics female category for participation.
Trans-persons are still not allowed in the Olympics female category no exceptions.