use https://federation-checker.vercel.app/ to check is the instance you are considering is blocked by others. and what the instace blocks.
Verbose2812
joined 1 year ago
that's because i run manjaro on my main machine, all the benefits of arch + simple intsall
no, it's an app trick. not all apps allow it. it's on the roadmap to be integrated in lemmy itself btw.
there is an entire instance dedicated to that, use the lammy explorer to find stuff. be aware that your instace could have defederated from that instance.
no idea, you should search issues on github.
Anyway comments are replicated across all instances, so nobody stops someone from running a modified instance that does not abide to the comment deletion request. Same for posts, idk about images.
you should consider everything that get published public forever.
there is comment edit history, even if you edit them the original will still be visible
if they have the same hash the deduplication thing will work. if they are different quality or other stuff no. thare are plans to implement something regarding more advanced deduplication but not anything implemented at the moment.