It is implied. Sorry, I didn't find the reference so it's more speculation what I'm doing. But CSAM is already illegal. You can have it taken down immediately and if someone doesn't comply, they become complicit by today's standards. The user doing it needs to face prosecution and that's already how legislation is. So what do you need that additional exception for?

It is good for the one case in which you're not doing the first two things. It is an excuse to not do the job properly and just hide it so nobody notices. The 'easy route' that does away with the difficult investigations and court cases and such. And I'm good at that myself. I procrastinate a lot. If you give me an excuse not to do a difficult thing, I'll happily use that excuse. In my opinion, it's a very bad approach to police work and they shouldn't have an easy excuse available to them, not to dig down and do their job properly. And I can't see anyone benefit from that except from prosecution now not having to pursue their investigations to the point where they catch the pedophile, and the criminals themselves.

I think I'd rather have 3 horrendous pictures online than have it hidden from my view and know they took the easy way to (not) deal with the offender.