The FBI is interested in busting perverts in closets. That's often how they work their way up the "supply chain" when it comes to CSAM. Consumers lead them to distributors, who lead them to producers.

A fair point. But it still seems reasonable that only about 1% of suspect posts lead to a formal inquiry. Doesn’t mean they aren’t taking the report into account. You have to figure that they already have leads on most of them.