The tale of The Emperor's New Clothes [1] would be appropriate.
In society in general we've decided to take as an assumption that everybody is identically capable in everything and thus that any and all differences must then be attributable to some form of discrimination, bias, or prejudice. And this is something that is pleasant to believe in large part because not believing it has led to dystopic outcomes in the past, including but not limited to government driven eugenics. So it's something that we want to believe. And also stating you do not believe it is a great way to have people judge you for some secret ist of some sort or another.
At the same time this view is contradicted by reality. In times past this reality would have been mostly just empirical, but in modern times we also have genetic and other factors strongly contradicting any notion of inherent equality. So what to do? In my opinion the most important thing here is to ensure as much equality of opportunity as reasonably possible. And this is an effort that should never relent. However, at the same time, it also has to be acknowledged that the lack of equality of result does not inherently mean there's a problem. Ultimately it's the typical problem. Trying to create utopia is often a great path to dystopia. Enforced equality of result for all is rather a key point in Brave New World.
Of course this does not mean that discrimination does not exist. But the standard for assumption of such needs to start growing beyond wild induction from dubious toy experiments, or from works that start with absolute equality as an assumption.
[1] - https://en.wikipedia.org/wiki/The_Emperor%27s_New_Clothes