I feel like this is a good thing given the circumstances we're already in. It might catch some predators while still keeping everyone's photos private. Sure, it's ripe for abuse, but when has it not been that way? Haven't we always had to trust Apple to do the right thing with our iDevices?

This could marginally reduce Apple's leverage against evil governments seeking to pry into iPhones since "if you can do it for CP, you can do it for tank man". But with Apple already being the dictator of all OS-level code running on your device, this capability isn't anything fundamentally new. Do we have any guarantee that certain devices in China haven't received a "special" version of some software update that introduces a backdoor?

Personally, I have an Android and hope that my next phone will run some flavor of Linux.