The OPERATIVE word is useless.
I have met many great pilots who are white and male... I've also met a few who are total oxygen thieves who are depriving a village of an idiot. I think those are the ones the Sqn Ldr at OASC is trying to weed out in favour of better able candidates who may or may not have the "right" genitalia or who did not attend the "right" school.
This isn't the 1950's, when a pilot was purely employed to "go up tidlly up up." These days in a massively reduced Air Force everyone has to be able to turn their hand to more than just the role they were recruited for - a concept some current RAF pilots seem woefully incapable of contemplating.
Thankfully they are in the minority - but why in 2023 would you want more people like that?
(I know this might not be a popular point of view)