I'm not the guy you're asking but what jumped out to me is that this change creates a database of images of minors and the damning/ironic part is that these are images of people who don't want to be easily searchable to begin with. Imagine the damage if this somehow leaks.

If my wording above sounds convoluted then let me paraphrase: a blacklist is a database too. Google's blacklist will contain assured images of minors because the minors/guardians reported them as such.

Sure it can be hashed/MLed/Bloomfiltered instead of a tabular listing but someone with enough patience and resources can probably make something out of it. (To be honest I don't want to peddle FUD and I'm speaking out of my depth here so I'd be glad to hear an assessment from someone with qualified experience in this area.)

This would be greatly alleviated if everyone was allowed to remove their images in search. I can't help but think it would help https://news.ycombinator.com/item?id=28216733 .