Sorry to sound cynical about this (again), but as mentioned before, Michael Gove has a history of being linked to racism. The contents of his bookcase came under scrutiny in the past when his wife posted (a now deleted) tweet showing the contents. While the books concerned may have belonged to his wife, and people have every right to read what they want, having books that promote racism, visible to others, is not an advisable move for a politician. When younger, I bought a copy of the Satanic Bible. I do not have it now as I considered it to be literally evil. There was only so much of it that I could read before I threw it away.
His support of Kemi Badenoch may have been genuine, and his support of Rishi Sunak may be also, but I still an cynical that he is trying to throw off the links that he may have to racism. I am unsure why this may be the case, unless he is planning ahead for a future once Liz Truss, (or Sunak) is removed from office, so that he can try to be leader of the Conservatives again. Or be a Queen/King maker/killer.