dishonest doubtfire pretends he can't see the word "large"
Which is larger? An Ovum? Or a Sperm?
"her theory blown out of the water."
No, actually it's doubtfires dishonest attempt to write a theory of his own
But the ability to produce ova is not a criteria for being a woman.
J K Rowling says so,
I believe a woman is a human being who belongs to the sex class that produces large gametes. It’s irrelevant ... if she was born with a rare difference of sexual development that makes neither of the above possible,..... She is a woman and just as much a woman as the others.
Like I said, she covers all her bases, and practically makes her claim useless and easily repudiated.
Women who cannot produce gametes are still women because their birth cert' says so, according to Ms Rowling, because their genitals at birth resembled female genitals more than male genitals.
The process for determining a baby's sex does not include the testing of whether they have the biological equipment to produce gametes.
The only test that is used is the sight test, what do the genitals look like?
Thus, we, and her, have already acknowledged that mistakes in the assignment of sex occurs. So, according to JKR a woman incorrectly assigned 'female' at birth is still a woman, irrespective of reality. (and both relevant boxers were assigned 'female' at birth)
Of course, in the instance of doubt, or lack of clarity, further tests are conducted, if the parents consent. and some may not.
The stigma attached to DSD is still fomented by those with Victorian attitudes to anything concerning sex. This sadly affects parents and sufferers of DSD, due to a natural accident, for the rest of their lives.
And going back to the topic, both boxers were assigned female at birth, they are not and never have been transgender, despite your attempt to spread false and mendacious rumours.