How would removing '..has yet to clear this content.' change the nature of the message. It will still mean someone there hadn't cleared the content yet. The message is pretty important as it prepares the group to be ready to help explain things that the new person might be able to anticipate what's to come. In truth, though, this isn't the case. I've been doing early Coil runs where all the message got was cheers for more tomes and then run as usual with not a single person stopping to ask who was new or if anyone needed any pointers then complaining rather profusely when the new people stop to watch cutscenes or fail to recognize battle mechanics. You know, the usual elitist antisocial behavior. I hope the message stays as it is, that way when the complaining starts I can point out that noone had any excuses to not know someone was new.