@bloognoo @davidgerard In the last few years, they managed to make Calculator, Notepad, and the Taskbar feel unreliable and janky. I don't think they know what 'quality' is, so it's hard to imagine that they can achieve it.
IMO, Windows is long overdue for a deep refactor. Keep the kernel, but break-up the various runtimes for different eras of the OS into immutable and separated blobs, and then run apps on those. I don't mind waiting a few seconds for legacy apps to fire-up a legacy runtime if it means my system won't consume 11GB RAM just to get to a desktop.