The beauty of this "debate" is that any document whatsoever, presented by a person in any position whatsoever, can be challenged for authenticity. Why? Because there is no ultimate authority, like God, to say, "this one is final". Thus, if you want to doubt, there is no reason whatsoever for you to stop.
Authority, eye-witnesses, paper, stamps, seals, personnel, vaults, etc., they can all be compromised, faked and/or defeated.
Throw in the feedback loop of conspiracy, ie. missing information indicates the conspiracy is deeper, stronger than we thought, and you have the conditions you need for this debate to last for the rest of your life and beyond.