I get that the scene (and the movie overall) mocks racists and racism, and in that context Little's character is speaking the language that those racists use and relate to.
But watching 6 reaction videos is anecdotal to the point you seem predisposed to making here, and certainly doesn't mean that nobody in the Black community has ever reacted negatively.
Also, in general there are all sorts of movies that still get made that can be offensive and funny. Team America (holy cow, that's already 20 years old too!) had scenes that were probably offensive culturally to many (not to mention the puppet sex scenes). Movie 43 had some pretty offensive scenes as well.