That video is long. If the boxer in the Olympics has 5 Alpha Reductase Deficiency, they may have been observed and considered close enough to female at birth. However, that condition is referred to as male at 12 syndrome. The body doesn't produce an enzyme to make dihydrotestosterone (DHT) so those with XY chromosomes don't have their male parts form right at birth. However, during puberty, enough testosterone is produced to complete the process and they go from looking like girls to boys. An adult with this disorder would be completely male even though they may have a birth certificate saying they were born female. They should not compete in women's sports as adults if they were fully masculinized. We don't know if that is the condition the boxer in question had or not. All we know is they may have had XY chromosomes. That condition is mostly limited to the Dominican Republic. If they had partial androgen insensitivity syndrome, that would be another possibility that may warrant possible disqualification depending on how male or female they ended up. That condition would be harder to set a clear standard to qualify or not because those with it are on a spectrum between mostly male and mostly female.