Let me share a passage from the dissent in a Supreme court case known as Plessy v Furguson. The majority of the court had just ruled that it was OK to force blacks to use seperate railcars from whites. Not only that, but it was OK for for the government to force railway companies to have such a rule. With this backdrop Justice Harlan spoke in dissent, arguing for true equality under the law. In the screed for justice, he wrote:
There is a race so different from our own that we do not permit those belonging to it to become citizens of the United States. Persons belonging to it are, with few exceptions, absolutely excluded from our country. I allude to the Chinese race. But, by the statute in question, a Chinaman can ride in the same passenger coach with white citizens of the United States, while citizens of the black race in Louisiana, many of whom, perhaps, risked their lives for the preservation of the Union, who are entitled, by law, to participate in the political control of the State and nation, who are not excluded, by law or by reason of their race, from public stations of any kind, and who have all the legal rights that belong to white citizens, are yet declared to be criminals, liable to imprisonment, if they ride in a public coach occupied by citizens of the white race.
Thats right folks. There was a period of us history where even your pro equality arguments were steeped in racism
More to the point. Even if you (for some reason) set asside the hole issue of slavery; there is still the whole Jim Crow era, where we litterally codified rasism into law.
All models are wrong, but some are useful. Thinking of evolved features as having a purpose is wrong, but it is also incredibly useful.
Why do we have eyes? In some sense, there is no reason, just a sequence of random coincidences, combined with a slightly non-randon bias refered to as “survival of the fittest” (itself an incorrect model).
However, saying that we have eyes to see has incredible explanatory power, which makes it a useful model. Just like Newton’s law of Universal gravity. We’ve known it that is wrong for a century at this point, but most of the time still talk as if it’s true, because it is useful.