A system that lets an attacker send hundreds of push notifications, effectively making a phone unusable until you click "allow" is a technical failure. So is on

A system that lets an attacker send hundreds of push notifications, effectively making a phone unusable until you click "allow" is a technical failure. So is one that lets an attacker spoof Apple's caller ID. Sure, that one is a failure with caller ID in general, but it's not beyond Apple's ability to special-case its own numbers.