When it is known that the greatest propagator of the concept of "totalitarianism" (that's is the real thing here), Hanna Arendt, rejected any process led by the oppressed, such as the wars of independence in Africa, but on the other hand praised processes led by economic elites, such as the American War of Independence, at least it is clear that this concept is not anti-fascist. When you have a concept that places absolutely different processes like the French Revolution and Fascism as equally comparable, the concept is shit.
For more, Towards a Critique of the Category of Totalitarianism by Domenico Losurdo and On Authority by Engels