Yeah, in my Windows days, I remember having a lot of small utilities that filled the gaps of the OS. There was one for deleting files too, I don't remember the name, probably unlocker something — it showed you all currently open descriptors for a file and allowed you to close them. As opposed to macOS, which straight up tells you "this file is being used by X.app, close it to try again" when you try to delete an open file.

But this is how it works, which is UX. UI is more about how it looks and how it's interacted with.