I don't think anybody is bemoaning the loss of the old Office buttons. The buttons were always kinda bad. The problem is that the ribbon also killed the menu

I don't think anybody is bemoaning the loss of the old Office buttons. The buttons were always kinda bad. The problem is that the ribbon also killed the menu bar. Menu bars are a standard, known quantity across every application, which clean easy semantics for keyboard access. On some OSes they even augment the menus with searchability, celebrating the power of plain text.