They are missing the T word, the F word, the D word, the S word, and the M word. Now obviously only some of those are racial slurs but I think keeping this in the code base rather than a database is definitely asking for issues
God, this is so childish. Perhaps you think that list should also only list words as "f-word" and have software interpret what it refers to so as not to offend anyone reading the code.
Funny anecdote about this: in the podcast "Blocked and Reported" one of the presenters tells a story she heard from a mother. Her child learned in school that "under no circumstance is it okay to say the n-word because it's the most vile, horrible, unforgivable thing anyone can say". The kid is 7 years old (or about that age) and has no idea what the n-word is so he asks the teacher. But the teacher refuses to say it because she's bound by her own logic of "under no circumstance" so kid is has no idea which of the many words beginning with n he's not supposed to say.
The point of not mentioning a full word was because for a slur to be a slur it needs to be in a shared context. Otherwise maybe it's just a shortened version of Michael or an embankment used to prevent flooding. The child in your anecdote is a perfect example of that. Thank you.
mind you, I only condone usage of the 3rd and 5th.
Slur blacklists have a problem with different languages.