I agree. Who can tell a real from a fake with only scans of a document? You can’t you have to have the real thing in hand to do that. Otherwise all you can say is if the scan has been manipulated.... It still makes me shake my head.
Anyone.
One can't verify authenticity, but a fake can be discerned. A wrong border, never used on a genuine document, obvious anachronisms, use of fonts that didn't exist, lines going straight over folds made after the document was allegedly printed, etc.