It’s easy to say that regarding race of coaches fired, but look at that list I posted yesterday, Of the 9 one and done coaches in the last ten years, 6 have been white and the Texans hired a black coach, fired him after one year, hired another black coach, fired him after a year and then hired another black coach. At one point you could make the placeholder argument, but there really isn’t any convincing evidence over the last decade or so that would indicate some racist practices in coach hirings and firings.
After I looked in to it, from what it sounds like, Kraft had it in Mayo’s contract that he was belichick’s successor and would learn while on his staff. From Kraft’s comments the other day, it sounds like Mayo just simply wasn’t ready, and Kraft took the blame.