> Because the photos and videos are analyzed on your child's device, Apple doesn't receive an indication that nudity was detected and doesn't get access to the photos or videos as a result.

Apropos of nothing, I really don't love the construction of this reassurance. This is not actually a reasoned-through guarantee, it's just two things that happen to be true at the same time. But the latter could change at any point, on-device processing does not preclude the device notifying Apple about what it saw.