It's important to note that many of these Americans are "not proud" for vastly different reasons.

The takeaway here shouldn't be "look how low we've sunk with the X people in power". It should be about how even in a democracy, less than half of the voting public is happy. It's similar to the fact that Congress as a whole has an abysmal approval rating, while each individual Congressperson has a high approval rating among their constituents.