There are only so many ways features can be permuted. The I'll defined nature of NN's requires the manuals step because of a neural hash collision.
My challenge to you is this: what stops this system from being abused for non child pornography purposes?
The answer is: nothing.
That's what has people's knockers in a twist. It is a backdoor, invisibly crafted, waiting to be subverted by an abusive power that manages to get into an advantageous enough position.
Arguing that Apple's algorithms are fine misses the point. The behavior should not exist.
