That BBC article was overall pretty good, I thought. Yes the IOC show themselves up.
I didn't know this - paragraph below from that article.
Several top sprinters have also been affected by the sport’s restrictions on DSD athletes, which now cover all track and field events in the female category. Namibia's Christine Mboma, who 200m silver in Tokyo, and compatriot Beatrice Masilingi have both been affected by the rule change. They along with 11 others had to miss the World Championships in Budapest last year under the new rules requiring DSD athletes competing in previously unrestricted events to suppress their testosterone levels for at least six months before returning to competition.
The numbers - Mboma, Masilingi plus ELEVEN others had to miss the World Championships, and that's just in the events that weren't already restricted.
Make a loophole, people are going to jump through it.