Earlier quoted context omitted.
Sure, but presumably that is different from the actual value of the app itself—the frontend. It's just a matter of effort to connect the interface to the backend. Why you'd insist on tying the two together is anyone's guess (likely convenience).
> (likely convenience). AKA the limited resource of developer-hours
Sure, but each connected backend magnifies value to end-user. To say any one client is worth devoting to just a single backend is crazy.