I think you're trolling but lemmy.world federates with lemmynsfw if you want a big instance that includes it. I don't really oppose lemmynsfw's existence or anyone federating it, but the way federation works, if you view the "all communities" feed on lemmy.world, your feed gets full of crappy pr0n. That was really annoying when I hung out there. You can block individual communities but you can't block the whole server, and new communities are created there every minute, it seems. Just give us a way to filter it and then it's fine.
I didn't even realize lemmy.ml had defederated lemmynsfw but lemmynsfw's absence does make .ml a lot nicer.