Well, in my hypothetical scenario, “gamipedia” is not going to have an article about “the sky is”, that’s not really its purpose. Ideally you’d only have one encyclopedia wiki, or multiple that are willing to work together and not duplicate each other’s content. If another competing supposed-encyclopedia instance called “assholepedia” does have an article about “the sky is: a liberal delusion”, then you block and defederate that asshole instance. No big deal.