Microsoft confirms Windows 11's File Explorer Properties dialog is a real WinUI rebuild, and more legacy dialogs are moving to WinUI next.
Microsoft says that their plan is to convert more Windows UI elements to WinUI3, while confirming that the new File Explorer Properties dialog was rebuilt from scratch in WinUI, and not just a fresh coat of paint.
Windows 11 has felt inconsistent for a while now. Modern panels are right next to decades-old dialogs, RAM usage keeps creeping up in apps that are supposed to be native, and popular Windows apps keep turning into web wrappers because developers don’t trust Microsoft to stick with a UI framework.
that's what I was thinking too, but to be fair historically linux wasn't a GUI centered world, so there were not much core system GUIs that could become obsolete