Except when windows behave like apps and you close a window and it closes the app. Or it’s a single window app but closing the window does not close the app. Or

Except when windows behave like apps and you close a window and it closes the app. Or it’s a single window app but closing the window does not close the app. Or when you full screen a window and now everything is inconsistent. Or when you use Mission Control and now the switching paradigm is based on Windows and not Apps.