I find your response to be a mischaracterization of this issue. It's a straw man argument. No one is saying that we must remove colors from our technology or our world. I think it's safe to say that people don't see a red light and equate it to anything negative about Native Americans, or think a yellow sun painted on a wall is somehow offensive to Asians. This is a disingenuous argument.
Unfortunately, we see a lot of terms that reinforce black = bad and white = good throughout our society. Black sheep, white knight, black market, blackball, lily-white (innocent), black mark, blackmail. Blacklist and whitelist are just two prominent examples in technology. We also have master/slave and black hat/white hat. "Dark times" are bad followed by "brighter days" ahead. How would it feel if your name was John, and most of society seemed to use "John" as something negative? "Don't John out on me." "Did you check the John list?" What if these examples were gender based instead, and male-oriented terms were used to denote evil, incompetence or danger, while the female-oriented terms communicated the opposite? Would you call that situation sexist? It doesn't matter that we don't intend this meaning to exist; the fact is that these terms come with the baggage of history.
You quoted Wikipedia on this subject but neglected to mention the section on Computing, which points out how many technology companies are removing these terms from their code and documentation. Looking only slightly further into the etymology of blacklist would've made its racist connotation clear. Just one example: blacklist | Etymology of blacklist by etymonline
These terms have been in use for a long time but that doesn't make them inherently right or good. Language reflects our culture, and in the United States we've had a culture of racism, overt and covert white supremacy since before we declared our independence. That's the society that gave birth to the concepts and the terms we still use today! Moving away from terms that synonymize bad/lesser with race labels ought to be a good thing. Instead we have excuse after excuse about why this isn't appropriate, isn't "real" change, is well intentioned but misguided, etc. Sure, this is a very minor step but that doesn't mean it is without merit. How can we tackle the big stuff when we can't even change some words we use?
Ultimately, I'm not going to die on this hill. I just want you to ask yourselves why such a minor change is producing this much friction. Is your life going to be impacted by this change? Probably not. Even so, would you rather belong to a society pushing to be better with its language vs. one that would rather continue using the racist artifacts of the past? Which one is likely to be the morally correct one?
Nobody alive today created these terms. We learned about them without their racist connotations. We use them without racist intent. However, none of this absolves the society that created the terms or the terms themselves. We know better now and it's time to change.