I agree. That comment was great (if sadly true)!
It makes sense to me that they would leave. Anyone with half a brain and the means probably wants to get out of that city if they’re not in the fight to preserve any decency that may be left there.
I don’t believe most blacks buy into the diversity that SF promotes. It has nothing to do with race. Simple economics and genereal disgust at city government would explain it quite well in a nutshell.