Your argument is similar to security through obscurity. Obviously semi-technical people know how to "modify" (add objects that obscure other objects, then flat

Your argument is similar to security through obscurity. Obviously semi-technical people know how to "modify" (add objects that obscure other objects, then flatten and cleanse the output). Really the issue is that we need a non-MS-Word editable document format that includes hash/signature features to ensure the edit/publish state of the document.