I saw 30 mentioned somewhere, and I think that’s a more likely guess than 5. When men have a porn collection, it rarely has less than a hundred images, and so the threshold for CSAM detections can be set quite high in quantity, and enjoy a near-zero false positive rate aside from malicious hackers.

(And yes, 90% of CSAM abusers are men, so y’all will have to find some other way to weaken my argument.)