Yes some call it tabbed menu. Others call it ribbon menu. It should be the default as many users nowadays are used to this UX paradigm
Based on this comment section, it isn't all that clear which one should be the default... probably a compromise could be made by adding a more obvious way to switch between the modes.
Is this tabbed user interface what you're asking for?
https://books.libreoffice.org/en/IG72/IG7212-UserInterfaceVariants.html#toc8
Yes some call it tabbed menu. Others call it ribbon menu. It should be the default as many users nowadays are used to this UX paradigm
Based on this comment section, it isn't all that clear which one should be the default... probably a compromise could be made by adding a more obvious way to switch between the modes.