Earlier quoted context omitted.
I'd say macOS actually is a lot more polished than Windows, but I agree with you that it is damn confusing. Try "closing" an app for example and you'll find that half the time it will not have closed properly, or maybe it did, who knows? It depends on the app. If it's vanilla you can bet it will have to be closed with CMD+Q
This is actually more confusing then windows. The visual UI element to close does not close. Instead you must click File->Quit or CMD+q. These are not intuitive and must be learned.
And yet, with modern browsers - since firefox - cmd + W closes a tab, cmd + Q closes the browser. So even Windows users don't find it that strange.