Using that word means that centuries of enslavement and subhuman treatment are not abhorrent to you. Because a person who finds it abhorrent would never use it. In essence it shows you still put yourself above other people in that incredibly vile way
In a document discussing taboo words and how a tech company chooses to categorize them it seems foolish to block that one word but not all the others.
Is there any context in which you feel it is acceptable to use that word?
Good thing mentioning it does not mean that.