> //sarcasm is not even enough to describe this lunacy that's eating the world//
The author’s “accidental racism” phrasing is a little awkward, but the idea is there. The point isn’t that “whitelist” and “blacklist” are “racist terms.” Clearly, they are not. The point is that members of the audience for your documentation, paying members and influencing members, could be harmed by them in certain contexts. We don’t always have control over the context or situation in which the user encounters the documentation. For example, I could say that your response is "hysterical," indicating that I find the notion that this is "eating the world" to be overly emotional and alarmist. If you, or another reader, were female, you might then object that "hysterical" shares its root word with "uterus," and its etymology and current shading indicates "characteristic emotional and mental weakness that stems from having a uterus, i.e., from being or being like a woman."
Writing is an exercise of power. It is even more so than verbal speech, in the context of documentation especially, because it provides no forum for the user, your paying user, to clarify and to point out offenses. And take a deep breath, because even if this lunacy eats the entirety of software documentation, the world will be nowhere near consumed. You might even be richer for it, in both senses of the word.