It's not that I disagree with your opinions, but you list some...
odd examples to illustrate your point.
For the entire decade of the 1950s, Ed Wood is the only director that comes to mind? For the "golden age" of the 1940s, you jump from "Citizen
Kane" to "The Wolfman" and Val Lewton B-movies (which admittedly were brilliant.)
For the same time period, what about the films of Alfred Hitchcock? John Ford? Howard Hawks? Walt Disney? Billy Wilder? It was the heyday of
film noir, the adult Western, the Technicolor musical, and Hollywood's first attempts at serious science fiction. I could go on forever, but
I can't be bothered.
The conventional wisdom is that 1939 was the greatest single year in movie history; seemingly every film from that year remains a classic to this day.
However, if I have to go by decades, I think my vote would go to the 1970s. Seminal work by Francis Ford Coppola, Brian de Palma, Martin Scorsese,
Steven Spielberg,
George Lucas, John Carpenter, John Milius, Robert Altman... those are just off the top of my head. Stanley Kubrick, Richard
Donner, John Badham, Ridley Scott, Walter Hill creating greatness... Foreign dudes Fellini, Bergman, Herzog, Kurosawa, Truffaut, all turning out the
good stuff...
Make mine the seventies!
Baack