In practice, this isn't really true? Like, when do users delete programs manually anymore? Its almost always some uninstaller doing it from some installed app

In practice, this isn't really true? Like, when do users delete programs manually anymore? Its almost always some uninstaller doing it from some installed appstore type program (Steam, Adobe Cloud, etc). And usually the user is deleting the whole directory, which almost always has additional files that the program needs to actually work. Those files will be deleted so their install already gets corrupted either way.