As far as CP goes, there should be essentially zero CP anywhere in the archive. DNM users almost universally loathe CP, and no market has ever dared to permit sales. (You may find this funny: CP is so taboo, on the DNMs like elsewhere, that it's been used in at least one attack - SR2's DoctorClu/Brian Farrell infamously attacked a rival market's forum by posting CP to it.)
These users are willing to do so many other illegal things, but the thought of being known as a pedophile or supporting pedophilia in any way, is completely abhorrent to them? Interesting datapoint.
I'm pretty sure the distinction is that voluntary transactions have no victims, and DNM folks care more about morality and ethics than legalities.
Not even that complicated, pretty much summed up by "no women no children"
I think you will find, that apart from the paedophiles themselves, they are universally loathed. Probably more so by criminals.
The last place a paedophile wants to be is locked up in prison.
This probably has a lot to do with why the War on Drugs has been such a failure and why legalizing does not seem to unleash crime waves.
Actually, this is an interesting topic. Poisoning a dataset. CP would work for private security investigators, and to poison against government investigators you could use leaked classified secrets.
Could you work around this by operating on the files on VPS you don't own, streaming a very low-res ('Basilisk'-proof - https://en.wikipedia.org/wiki/BLIT_(short_story) ) remote desktop image.
It's an interesting issue, and a way investigators may be attacked, but it's their responsibility alone. There exists data. This is that data. The data may bite. Touch the data at your own risk.