[acdha]

Yes, it’s an old usage just as niggardly or denigrate predate a word they’re often assumed to be derived from. The point is that people have to think about that in a context where they otherwise wouldn’t, and it costs so very little to avoid that.

Many projects have replaced these terms with more accurate ones in the past and it’s a very minor shift. It took very little time to do and years later, only aggrieved right-wing activists are still talking about it. Everyone else is just using software without the distraction of wondering about the origins of the terms they’re using.

[Dylan16807]

No, it's not like niggardly. Blacklist is a common word and 'black' does not resemble any offensive words.

[acdha]

We’re talking about black being used in a negative connotation, with no connection to color. I mentioned it only as another example where the origin of the term is harmless but there is still a good reason why you might want to avoid using a particular word.