cat /dev/urandom and it also has CP, oh noes! quick delete everything.

Hoarding porn is kind of useless nowadays, especially without any kind of selection and categorization, but maybe someone does it because it's their hobby (or obsession), who knows.

Also if a lot of people has a bunch of porn images scraped from forums it's quite possible that eventually some of that might become illegal as the laws change here or there around the world. Should they proactively delete everything? Sure, they could. To be safe.

But this kind of safety is absolutely the bad kind on the long term. (Though of course it's possible to advocate for reform while not storing content with uncertain legality.)

Dude, this is all great in theory but in a court of law you'll get completely horsefucked if you have child porn on your hard drive. The judge and jury won't care about /dev/random or a fall to reform

You would think that in our "great" and "fair" legal system simply scrapping a legal site would not be enough to ruin your life. Especially if no harm was done and no intention of harm was there.