Unfortunately, what with all the negative publicity this is causing, Apple now has a huge incentive to catch somebody, anybody, just to justify the project. The thing about pedophiles is, all it really takes is an accusation; the public will presume guilt, the target's job and home and life are taken away, and Apple + NCMEC can say, "See? It works." Even if the target is later exonerated, the damage is done. The teams that vet the candidate images might even have quotas to fill. "How many did you catch last month?" Your innocent baby bath pictures might catch you up in a net that destroys your life, just so some low wage clown can claim they made quota.