“Female” is well-defined for 99.99%+ of the population (and for most non-human species too, in fact). For those with DSDs, a judgement call can be made. For example, a person with XY chromosomes and the 5-ARD DSD (who was raised as a female due to the appearance of their external genitalia) has testosterone in the normal male range and thus is likely to have an advantage over females, and thus should not compete in the female category.

Cases of genuinely ambiguous sex are vanishingly rare, and are nothing to do with trans identities which are differences of social gender that do not change the underlying biology.

The available evidence indicates that Khelif is actually male: two blood tests from two independent labs revealing an XY karyotype, a member of Khelif's training team describing problems with hormones and chromosomes and that Khelif has been on medication to adjust testosterone to within the female range, and a leaked medical report which describes Khelif as having the male-specific disorder of sexual development 5-alpha reductase deficiency (5-ARD).

This implies that Khelif is not female but is male, and went through male puberty, therefore having the male physical advantage in sport caused by male sexual development.

> The Algerian boxer was born female, but has high testosterone due to whatever medical condition,

Imane Khelif has an X and a Y chromosome. She has 5-alpha reductase deficiency, which leads to the development of a pseudo-vagina and internal testicles. Crucially, though, the hormone levels are the same as typical males. In terms of upper body strength, red blood cell count, bone density, etc. Khelif is the same as other males.

She wasn't disqualified due to hormone levels. She was disqualified because the International Boxing Association's criteria for participating in the women's category is having a female karyotype (no Y chromosome).

> Do you want sports governing bodies to inspect genitalia? Do blood tests?

Chromosomes can be checked with just a mouth swab.

Female athletes taking testosterone, regardless of if they believe themselves to be men or not, would be excluded from competition for doping.

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These are still examples of males imposing themselves on what are supposed to be women's competitions. Every single one of these cases highlights an unwanted male intrusion.