The fact that a system is widely used when classifying the impact of UV light on melanoma does not imply that it has relevance in another.
> 6 choices is far better than none.
Actually, no, sometimes the "solution" is worse than the problem. It's quite regressive to bake an outdated conception of the color theory of race into a standard that aims to "educate and engage academic and scientific communities, and the general public" (the stated mission of the Unicode Consortium).
As one of the "billions of people who aren't white" that you refer to in your original comment, I find this approach more problematic than the existing status quo (leaving it up to the font creators).