> On the CSA side, you rarely hear about arrests (they happen but less than CSAM).

Because it is nearly always someone we know. Someone who we just cannot imagine would ever do such a thing, even when the evidence is glaringly obvious. And I suspect that the fraction of the population diddling kids in real life is breathtaking, and nobody really wants to face that head on. Too uncomfortable.

I could just be overly cynical today. But given my own experiences and other people I've known throughout my life, I really believe it is very common.