Not to differ, but Duck Soup IS a documentary on modern politics.
As to the middle class lives portrayed, I would even call them upper middle. And remember, there are lots of JW's who did manage to get college and become accountants, nurses, lawyers. They are the ones with an extra bedroom so they can take in a visiting dignitary and wine and dine him. None of the hideabed and hope the damned old truck will start.
If I ever get a time machine, I am gonna go back and bump both those girls.