Your knowledge is 30 years behind current historical research. I'm not saying you are totally wrong, but totalitarism as a mean of explaining nazism was abandonned in the early 90s by academia (to be exact: in the 80s in Germany, early 90s in the US and in the mid 90s in France).
It is still taught in school because some states want it taught that way, but WW2 historians do not use it as an explanatory tool anymore (except a part who specialize in Italian fascism, but nowaday even those are the minority in their field).
This tool was created during McCarthism to equivocate the Soviet Union and Germany, and also help explaining that denazification was complete by 1953 (it was clearly not, between the explicitly neonazi DRP, NPD, and the FAP, you also had the REP who was neonazi in its program and his ex-SS leadership, but not explicitely so).
It is still taught in school because some states want it taught that way, but WW2 historians do not use it as an explanatory tool anymore (except a part who specialize in Italian fascism, but nowaday even those are the minority in their field).
This tool was created during McCarthism to equivocate the Soviet Union and Germany, and also help explaining that denazification was complete by 1953 (it was clearly not, between the explicitly neonazi DRP, NPD, and the FAP, you also had the REP who was neonazi in its program and his ex-SS leadership, but not explicitely so).