You frame it as "don't discriminate based on skin color, as in don't hire a black person because they're black" while not saying any more of the quiet part out loud.
Many don't "play it safe" in that fashion. It's safer to not know. For them. Because if senators and other congress critters start getting tracked provably, then things can turn sour really quick.
Imagine of grindr required id? Every GOP event would be a lawsuit minefield for then.
Could be layer 9, management