Android is way more tightly controlled, uninstalling an applications scoped data is just removing a directory. In Windows it's up to the app to clean up. It's

Android is way more tightly controlled, uninstalling an applications scoped data is just removing a directory. In Windows it's up to the app to clean up. It's not as great as *nix, but nobody is saying it was. Apt and friends just do the cleanup for the app, in a standardized way. If they miss something it's still there.