There is so muddled thinking in that article it's hard to know where to start.
It sounds as if the Czech athlete was male with a male DSD. So should not have been in female competition. Do you wonder why a 13-yr-old girl was asked by a strange doctor to go to an athletics meet with his 18-yr-old daughter, also a stranger? I think the doctor knew or suspected Koubek had a DSD.
Koubek always felt different and in fact was - he would not have experienced periods, but may have had nocturnal emissions and testosterone surges. I'm happy for him that he got surgery that was right for him and found love. I also respect him for not wanting to carry on competing in women's competitions.
FYI it was gay people (predominantly men) who were sent to the concentration camps by the Nazis. Cross-dressers could apply for a card which certified them as heterosexual and protected them from arrest for homosexuality. The Nazis were cool with transvestites.
This guy was a male with a DSD. Men who claim to be women (MCW) very rarely have DSDs. In any case, MCW and men with DSDs are all men, not women and should not compete against women and girls. With virtually no training, this man trounced the women he raced against. That's male athletic performance advantage.
Sex testing is only necessary because men try to masquerade as women. If they didn't, women would not have had to undergo the humiliation of genital inspections. Sex testing using DNA from a cheek swab was standard for a time but "sex passports" were stopped in the 90s by people who wanted males with DSDs in female competition. A return to sex passports would solve all the problems.
Is it evil to check someone's age or income for means-tested benefits? Is it evil to check whether a house buyer already owns a flat for establishing eligibility for a first time buyers' assistance scheme? We check because some people cheat.
Vegetarianism is evil because Hitler was a vegetarian, right?