Not being able to back up app data to another device that I own because its encrypted with a hardware-tied key that I can't access is a terrible design that pla

Not being able to back up app data to another device that I own because its encrypted with a hardware-tied key that I can't access is a terrible design that plagues modern mobile devices. It's my device; I should be able to access any data on it. There are plenty of viable security models where the app data could be securely protected from Apple or Google by using a key that I own and can use on other devices.