Document oriented macOS

In macOS,

  • app's Menu bar isn't contained within the window.
  • if you click X, it doesn't kill the app, but rather close the app's window.

So Menu bar represents the app and the window is app's "document".

But the Menu bar also contains options regarding only one window, eg. tabs Edit, View, Window. (You change view of only one window)

Why is this distinction made? (neglecting user experience with the OS).

In X11 or in Windows, the window is the app and it is self-contained.

Here at the end, somebody says it enables new workflows, but he doesn't give examples which would be fairly unique.

I've seen this post, but I don't think it is good UX decision to force user to user keyboard shortcuts.