Earlier quoted context omitted.
Interesting, maybe old menus had some trivial adequate nature for most users and ribbon, even with all its worth doesn't tap into that. Personally I'm still incapable of deciding.. because I hated nested menus (too deep, too adhoc) but the ribbon is a bit less easy to remember than I'd hope. That said it's a good step toward keyboard shortcut memorizing.
One thing about the old menus is that they were extremely configurable. Like, you could not just hide or reorder items, but reorganize the hierarchy if you wanted. People mostly used that for toolbars, but Office menus are technically a kind of toolbar. Some of that still lives on in Visual Studio, where it is even extended to context menus: https://docs.microsoft.com/en-us/visualstudio/ide/how-to-cus...
There's also the Quick Access Toolbar, which is exactly like the toolbars of old if you pin it below the ribbon (not in the titlebar).