Like there is some sort of "columnist test" which objectively ranks the columnist skills, and in the field of Column Writing the best people get the jobs. Can't replace a SCORE 97 columnist with SCORE 94 columnist just because the latter is black.
This is not how anything works, except maybe "how many boxes can you pack and ship in an hour," or, "how many radish plants can you harvest," and certainly not the hiring process for columnists for prestige publications, but people really think it is, somehow. The people who who have those jobs.