He knew at puberty when he started ejaculating instead of getting a period. He was scouted and discovered when he was playing football with the boys in the neighbourhood, forbidden for girls in that country. He knew all along, right from puberty. I have zero sympathy because it may have been hard to find out he was male, but from the moment he got in that ring to hit a girl, that is when he made that decision and no longer deserves sympathy.
MY sympathy is for Angela Carini. A woman who did absolutely nothing wrong. Yet was mocked for crying (while Khelif stood by, SMIRKING! And he touched her on the breast afterwards as he went to leave!) and forced to apologise for crying and for losing to him!