That is not an accurate analogy at all. Apple DID design this with privacy in mind. What would work to fit your inaccurate analogy is if Apple suddenly started reading everything of yours in the plain, directly violating your privacy.
As it stands, the system is designed so that the phone snitches you out if you have CSAM on it matching some perceptual hashes (and plenty of it), but if you do not have CSAM above threshold amounts then your phone never even phones home about it. It is in fact a privacy-preserving mechanism in the sense that Apple never sees your photos.
As it stands, the system is designed so that the phone snitches you out if you have CSAM on it matching some perceptual hashes (and plenty of it), but if you do not have CSAM above threshold amounts then your phone never even phones home about it. It is in fact a privacy-preserving mechanism in the sense that Apple never sees your photos.