piracy, steamdeckpirates and some other one from dbzer0.

Here’s the relevant thread:

https://sh.itjust.works/post/2881638

From what I’ve heard, at least. I know there’s unfortunately quite a lot of loli stuff based on the defederation lists I’ve seen. I’m happy to report that I’ve never had to see either here first-hand.

OP is claiming that they agree with lemmy world's defederation choices driven by CSAM, which is unquestionably nonsense. Lemmy world admins have made several in depth posts explaining defederation decisions and none of them had anything to do with CSAM. In some jurisdictions, it would likely be illegal to give such an explanation as it would amount to creating a pointer to a source of CSAM that hasn't yet been taken down. By and large, these things are reported directly to law enforcement and cleaned up quietly, without showing up in modlogs... and in many jurisdictions the law REQUIRES handling CSAM in precisely that fashion in order to prevent it from being archived before it's taken down.

Is there a non-zero amount of CSAM in the Fediverse? Sadly yes. Once you achieve a certain scale, people do all the things... even the bad ones. This research paper (from Stanford, it's reputable and doesn't include or link to CSAM) discusses finding, in a sample of 320k Mastodon posts, over 100 verified samples of CSAM and something like 1k-3k likely adjacent posts (for example that use associated keywords). It's pretty likely that somewhere on Lemmy there are a non-zero number of such posts, unfortunately. But moderators of all major instances are committed to taking appropriate steps to respond and prevent reoccurrence.

Additionally, blahaj.zone defederated from lemmynsfw over the adorableporn community. The lemmynsfw admins take reports of CSAM very seriously, and the blahaj admins stopped short of accusing them of hosting actual CSAM. But they claimed that models of verified age "looked too young" and that the community was courting pederasts. These claims were largely baseless, but there was a scuffle and some of the secondary and tertiary discussion threw around terms like CSAM loosely and incorrectly.

I think OP is probably hearing echoes of these kinds of discussions 3rd hand and just not paying attention to details. There's certainly no well-known and widely federated CSAM communities, and all responsible admins would take immediate action if anything like that was found. CSAM doesn't factor into public federation decisions, because sources of CSAM can't be discussed publicly. Responding to it is part of moderation at scale though, and somewhere some lemmy admin has probably had to do so.