If that 'bloke' told me he was a 6’5” Chinese woman, I’d say "you've got something Wong with you mate".
If someone wants to identify themselves as a 6'5" Chinese woman, they're welcome to. They've obviously decided to do that on one of JohnD's infamous whims. It doesn't mean every one else has to accept their height, their ethnicity, their gender, etc.
In scenarios where it doesn't matter, it doesn't matter.
But in scenarios where it does matter, they would usually be required to provide some kind of evidence that they are indeed 6'5" or a woman.
I guess anyone can describe their ethnicity as they think fit.
But the interviewer started by asking about bathrooms and locker rooms in the scenario of transgender people. And the students demonstrated their tolerance and understanding.
Notice how the question was never recorded, or carefully edited out in the first round of questions.
When the interviewer strayed into the absurd scenarios, he was still tolerated and understood, even though the students obviously thought he was being absurd, but it was in a scenario where it didn't matter how he identified himself. If it did matter, he would have been rightly challenged on how he identified, and what caused him to arrive at his conclusion, as the students implied.
Going back to the topic of the thread, the athlete identifies as a woman after years of transitioning, and has been medically and scientifically examined and has been assigned the gender of female.
Her genital and biological anatomy is a complete unknown to us. But one would assume that the committee would take into consideration the biological anatomy of athletes in allowing them to compete.
