I don't recall every stating anything like that. It's important, yes, but it doesn't hold the multiverse together or anything like that, and neither does the location it's placed in.
I must have misinterpreted what information we were given, my apologies! But yeah, I'd say trying to keep such an obvious endgame goal as "unambiguously evil organization wants to destroy the unambiguously good organization by collecting Macguffins" a secret was a silly move.