TL;DR This is a pledge to defederate from lemmy.world if they end up defederating from any of the instances in the Fediverse Anarchist Flotilla (FAF), which consists of https://lemmy.dbzer0.com/, https://anarchist.nexus/, and https://quokk.au/. Just want to see if the admins are aware of this situation, and see what others think.
No, lemmy.world is federated and works fine. I recall hearing something like that a while ago, but it was a temporary measure during an update to the server software. Its up and working, and been federated for a long time.