The bottom line is these tests will catch dozens of people who are phenotypically women, who can even give birth. Why should men be allowed to compete as genetic freaks but not women?
But I want to point out that XY+CAIS individuals cannot conceive or carry a child. They have no ovaries and no uterus.
> Why should men be allowed to compete as genetic freaks but not women?
They are, if they are female or have CAIS. Caster Semenya, for example, does not meet that standard. Caster was assigned female at birth and raised as a girl, but is not biologically female, rather a male with a DSD (5-ARD) who has testes and fully male levels of testosterone and musculature.
one type most definitely would "fail" SRY test
yet they can give birth using donated egg, IVF, etc.
nature makes many variations, it's not exact, it's not binary
there is common and less common and that's why it's messy
A different approach would have been to accommodate the less common
But they purposely decided not to do that because that's the opposite of their goals