The question of legality on Lemmy is something that has to evolve and be discussed because of federation. Stuff on one instance gets replicated on others in other parts of the world. What factors should be the determining ones? The place where the instance is hosted? All the places where the content is replicated? Who is liable? The owner of the originating instance or all the instances that replicate illegal content? If this wasn’t free and open, but rather a huge corporation, the fediverse would have a legal team to decide already.