I have never seen a style guide make a distinction between skin colors, and I disagree that nobody would care if they capitalised 'white' but not 'black'.
Reading comprehension must be so hard.
The style guide in question: "why we capitalize ‘Black’ (and not ‘white’)"
Your comment: "You’re quoting to a reply that replies to a link with a style guide that does exactly that. Reading comprehension must be so hard."
Yes, it must.