"Provisional Whiteness" is definitely a phenomenon. As long as you support the White media line and make enough money to gain status, you can be "at the table" until the next social panic that you're a target of. If you consider the construction of Whiteness as the elite consensus on in- and out-groups, you can observe this dynamic beyond the fiction of "race", as well. "Model minority" applies just as well to the South Asian Tech CEO as it does to the Trans CIA Agent and the Female Politician, and these are all provisional cutouts in the fabric of Whiteness which by default admits only the kkkrakkkerest kkkrakkkers available. Reactionaries exist in every polity, and their position and goals depend upon remaining White at any cost. EDIT: It occurs to me that this last thing applies equally to Classical Whites and can be understood as a motivation for reactionary White peasants and workers in the Empire defending their position in the near-bottom end of the ladder of Whiteness as the social structures of dignity deteriorate under late capitalism. The White class is shrinking, and this leads to the social psychosis of the Aggrieved White Man.