Nazis and fascists were progressive in so far as they copied Bolsheviks (state control of the key sectors of economy and social programs). In fact they initially marketed themselves to the working class as socialists with nationalist and traditional values, as opposed to the cosmopolitan values of the communists.

A lot of things are imposing but are not Nazi or Fascist. However Nazism and Fascism without traditionalism doesn't make sense. Both (especially Nazism) draw heavily on nationalistic mythology. This is not to say that traditionalism implies either Nazism or Fascism. That should be obvious. My point is that Brutalism has nothing to do with either Fascism or Nazism.