Comment by a-dub

> However, there is an unexpected upside to having the menubar there even so. Because macOS apps can't not have a menu bar, they are forced to expose their commands there. Which usually ends up being a more stable UX compared to all the moving around of buttons in the window itself, plus you can search the menus.

that is not nothing- but maybe a vestigial training wheel for onboarding a generation onto single application guis. maintaining separate stacks of applications and then document windows within applications (as is done with the global macos window switching keyboard shortcuts) also feels clunky and more suited to an outmoded (har) ui paradigm.