Earlier quoted context omitted.
I could be wrong, but I don’t think either term has the etymology tracing back to referring to a person’s race.
The word black and its etymology has nothing to do with race?
And these of course are not based on the idea of “race” (which I think is a more recent idea).
But I was talking about the use of the word “black” as a negative thing, such as in “blacklist”.
Etymologyonline.com says “Meaning "fierce, terrible, wicked" is from late 14c. Figurative senses often come from the notion of "without light," moral or spiritual.”
I think this refutes the idea that the metaphorical associations of the word “black” come from associations with race.
You say “nothing to do with”. This phrasing seems open to interpretation. Some might say that everything has “something to do with” everything else. Supposing that you agree that the etymology of the word “black” “has nothing to do with” the idea of being a bad cook, then sure.