Can we just have the most qualified doctor regardless of race in place of the unqualified heroin addict? I'll take that. They can be a black trans lesbian (or not for any/all of those) for all it matters, so long as they actually know their shit.
Like RFK has already blown his stopped clock moment, and it was about food additives - can we get someone who will still do that bit but is also otherwise competent?
It's genetic. It's more prevalent in some populations than others because sickle cell also makes one resistant to malaria, so the more common malaria has been somewhere historically, the more likely people descended from there are to have sickle cell.
Like how people of European descent are more likely to be resistant to the Black Death. Turns out diseases that kill lots of people apply significant selection pressure and those changes don't vanish quickly unless they cause a problem that would prevent breeding in successive generations.