Disclaimer: I wrote this article and made this website.
There was some talk of this issue in the recent fediverse inefficiencies thread. I’m hopeful that in the future we’ll have a decentralized solution for file hosting but for now I deeply believe that users should pay for their own file hosting.
Stuff that isn’t accessed eventually gets deleted. If the Lemmy instances (which are clearnet, of course) delete the references to it, it would go away.
Which gets back to volunteers going through and moderating it. And the ethical and moral question of whether people who upload it are reported.
And… honestly? if there is even a 20% chance that running a file sharing node (because I just love to give away both bandwidth and storage…) is being used to store CSAM? I ain’t doing that shit and most people will similarly run screaming and call the cops.