Except there's no guarantee your phone will even contain a payload. Just the chance that some devices may have it, and there's no way to know for certain. And i

Except there's no guarantee your phone will even contain a payload. Just the chance that some devices may have it, and there's no way to know for certain. And if they take in even one phone to scan that carries the exploit, it can make past, current and future evidence rendered untrustworthy. It's herd immunity via the prisoner's dilemma.