Saunders, who is Black and gay, formed an “X” with their wrists on the podium when they collected their silver in Tokyo. Saunders, who has been an advocate for LGBTQ rights and mental health awareness, said the gesture represented “the intersection of where all people who are oppressed meet”, adding that they hoped the medal would help “people all around the world who are fighting and don’t have the platform to speak up for themselves”.

Apparently that gesture has been taken by biological females and repurposed:

Turkey’s Esra Yildiz Kahraman lost every round on the judges’ scorecards against Chinese Taipei fighter Lin, who joined Algeria middleweight Imane Khelif in reaching a gold medal match at Paris 2024.
After a friendly handshake, Kahraman held the ropes open for her opponent as she exited but then went to the centre of the ring and
made an ‘X’ symbol with her two fingers to all areas of the crowd.
The gesture is the same as what Lin’s last opponent Svetlana Staneva did following her points loss to the top seed but when asked to explain the signal, one of Kahraman’s team replied: “No comment.”
The X sign is thought to be a reference to female XX chromosomes.https://uk.yahoo.com/sports/news/lin-yu-ting-books-spot-210731722.html