> Once the phone dies and the user buys a new phone, there won’t be a way to get this app unless the user copied the app package through a third party application on a Mac (Apple removed the ability to sync/backup app packages to a Mac since iTunes 12.7).

yeah. thats where the experience diverges from other platforms.

the current device, with the current OS, won't have any problems. asking for more is mostly a different standard than other platforms, sad to hear they killed making your own app package copies.