DSDs are sex specific conditions, though - some only affect biological women, and others biological men, though ambiguous sexual organs and presentation can absolutely happen and that can make it hard, in the absence of genetic testing, to know what someone's condition is, and therefore what their sex is. In the richer nations, they now test genetically at birth to establish what is going on, so they can work out what the condition is - this matters, because there can be implications for eg kidney health, cognition, all sorts. But in large parts of the world, medical care at that level is far from universal. It's literally the only time that the "assigned at birth" lingo makes sense - it's assigned, rather than accurately identified, and absolutely where possible we need to be respectful and accepting of that person's sense of who they are and who they have been raised as being - I actually knew someone who was biologically male, raised as female, and it was very, very tough on her. The last thing she needed was anyone questioning her on what is, in point of fact, a medical condition she had no control over at all.
But there are some areas where that just collapses as a principle. Someone with a Y chromosome should not be competing in women's sports at all, and where you're dealing with contact sports, never mind combat, to pretend otherwise is just insane. I have absolute sympathy with how complex it must be to grow up believing you're female, only to discover your biology is male. This must be worse if your identity is also tied up in sporting brilliance, when your Y chromosome actually means you aren't necessarily brilliant - just male in the female category. But fairness means XX must have a protected category, or women will lose out horribly at best, and safety is surely the absolute decider because worst doesn't bear thinking about.
I have no clue whether this person is male or female, intersex or not. I don't follow boxing. I do know that the principle is simple: anyone male, whether they have a DSD that created ambiguity or not, does not belong in the women's category for sport. If this person is XX, with high testosterone, then that's one thing. Any variant with a Y, and they don't belong in women's sport. They are biologically male.
Of course we need to be sympathetic and accepting of DSDs and how they impact people. But sport is about bodies. And for every person at the Olympics, someone else didn't get to go. That's before you even get into the safety aspect of it all. You can't say, awww, but we don't want to hurt a male person's feelings, so all women have to budge up. That's just misogyny in a different wrapper.