Hard to say. It seems, from looking around here, that the implication is that this world - or at least this station - was once some sort of...multidimensional hub...? It is possible that the brochures were once entirely filled out when the station was working, but that they became blank or disappeared once worlds were destroyed...?

[ this is all a little too hypothetical for her to not add, clarifying: ]

It's just a possibility, of course. I have no evidence one way or the other. But that's the first thing to come to mind to make it "fit" the narrative. Perhaps the information inside is proof of some sort of regeneration of the destroyed planets...that said, I suppose for the moment it should at least give an estimate of how many different "worlds" we represent - perhaps.