I often look at the directory structure of my Turbo while connecting it to my computer and I have many times found files and old folders from apps that I have removed. At least for me it does seem a lot like Windows where remnants are left......and I remove those remnants when I find them.
Those are all stored data files in storage, definitely not things like Windows dll files, which can be both parts of apps and updates to Windows system files. It's like uninstalling word and it leaves your documents behind (which is likely what you want.) The two are really not comparable at all. Those files left behind cannot be executed as applications.