That's pretty much the point of banality of evil - you don't need an extraordinary assembly of psychopaths to run a fascist regime. All it takes is a group of loud populists, generally discontent crowd and, boom, you have "make Germany great again".
After ww2 finished, both Germanies discovered that they don't really have enough people without Nazi past that could run the country. So most folks just went back to work to slightly renamed workplaces.
Does that mean they were not complicit? They were and the winners made sure Germans would learn about what they caused.
I guess the only excuse back the was that they didn't know better. But we do.