The Rewards Section is like a History Page of the Konoha Great Tree where all players got rewards are logged in there .. So if you are seeing some names that got some rewards that is not available in the current tree then that's just the list from the previous tree .. The event does not lie about the rewards, you just misunderstood how the Rewards Section works .. I for example, can still see my old name in the tree where i got some rewards from the past konoha tree ..