That is why permission state needs to be hidden / discouraged from apps. No permission just gives you empty data sets. They should be also rejected from app store if they try to cirumvent unless it's a central feature of the app, like a screenshot app or a location tracking app.

With the permission model of apps, then we can start having system apps like istat menus being sold on the app store again too.

I think you haven't used iOS that much. In practice it's fairly rare for an app to shut down without a permission unless it's central to the app.