He seems genuinely ignorant (to his defense) that those are not just still pictures, images, "doing no harm", but that they have a story, they have been taken at some point, sometimes under duress, and then that some people are paying to get them, so it's a whole economics, and it's powerful enough to crush the weak at the bottom end, including non-consentant enslaved children.

Then again, maybe what should be prohibited and punished is the sale and the buy, rather than just the possession. But is it technically feasible?