Bear in mind that the versions that introduced the ribbon menus based their menus on two phillsophies:
1) (Almost) every feature should be available on a ribbon menu somewhere. No more trawling through menus and submenus.
2) The size and placement of a button is based entirely on which features are used the most often, and which are used together. In the modern MS Paint, Paste is a very large icon whilst copy and cut are only small ones, because people paste far more often than they copy.
So, naturally, every option is available at an equal level. That was the idea. And if they are prominen…