Nah I don’t think that’s it, rather the app data is tied to that specific phone via a number Google assigns to it. So, if you go to a new phone, or even factory reset your phone, you cannot restore data - even using root and apps that would backup the app data folder. Like I say, it used to work, it hasn’t for years.
Scoped storage (only one app has access to its own data folders) is the heart of the problem. Not saying it’s wrong, as I understand the rationale.
This makes root necessary to permit a different app to write to those folders.
And then apps need to be coded in a way that doesn’t cause problems with restored data. Because even with root, this can sometimes happen.
Nah I don’t think that’s it, rather the app data is tied to that specific phone via a number Google assigns to it. So, if you go to a new phone, or even factory reset your phone, you cannot restore data - even using root and apps that would backup the app data folder. Like I say, it used to work, it hasn’t for years.