Meh macOS is more than shiny traffic lights buttons on your windows, global menus, and dock. It's also a clipboard that works everywhere and not like "oh you cannot do this because X11 this or wayland that", it's also human interface guidelines (the old ones, the new ones are unparseable shit) that make bloody sure that the OK/Cancel buttons appear where you expect them to appear. It's also some bloody keyboard short…
You are describing MacOS 9. The ribbon had all the settings for the OS, and was always a click away. Finder worked out of the box. These days, copy-paste is hit or miss, and the window manager can’t be reliably controlled via the keyboard. Also, even in first party apps, keyboard shortcuts are completely inconsistent. Command-0 no longer reliably restores the main window. In maps, Command-L doesn’t focus the location…
But I will relent and acknowledge that your arguments ring very true. How do I get my Messages window back if I accentally close it? Very good point.
The ribbon though? I think your memory is optimistic. It was in my memory ugly, clunky, slow and had some, but few system settings. But I must admit that in my heart OS 7.1 was the high water mark of usability and I resented all subsequent innovations... which it sounds like you might be able to empathize with.