AppManager

It is - and there are other ways to make that shortcut appear even without an app. But that app also got nerfed some time ago, and in general, even when file managers can access Android/data, that folder is missing many subdirectories, and most of those that can be seen, are empty. For some reason, you can get at some more files and folders in this structure if you plug the phone to your PC (this is apparently intentional). But none of that gives you access to any of the interesting/useful data applications store, and then applications also have a special super-private folder elsewhere. You can learn that and more through an app like https://github.com/MuntashirAkon/AppManager running in ADB over Wi-Fi mode (no-root).