The walled garden doesn't mean it lacks hidden doors (intentional or via hacks) for bad actors. It just means you, the user, have less control of your machine

The walled garden doesn't mean it lacks hidden doors (intentional or via hacks) for bad actors. It just means you, the user, have less control of your machine than the OS does. It's as likely to wall you in with malware you can't remove, as to wall it out.