Yes he is.
No.
Basic instinct is self-preservation. It would be insane for a Black Man to support White Supremacy just as it would be insane for a White Man to be for Black Supremacy.
Now, I see quite a lot of White people in support of Black Supremacy…overwhelmingly Left-leaning and Democrat voters, Antifa-types and such…and they certainly are insane. And, so are the White people who are White Supremacists… they are quite insane themselves.