No, a passport is a travel document and there are requirements set by each nation as to what is an authentic travel document and what is not. It is those nation

No, a passport is a travel document and there are requirements set by each nation as to what is an authentic travel document and what is not. It is those nation's requirements that apply when you are at their border, responding to their request for the documentation you have been told in advance you will need. These requirements are legal requirements, made known to you when you inquire as to what are the necessary documents when requesting entry to a nation. Each embassy can tell you that. If you present just any old paper when asked to present a valid travel document, then you are either playing a joke on the requestor (not a good idea) or you are representing that the travel document you are providing meets the requirements of the travel document that is requested. In which case it is fraudulent. It's fake. It is no different when you are pulled over by a cop and asked to provide proof of insurance, and you give him your handwritten note that says your uncle will insure you. Are you going to try to argue that your uncle is just an unrecognized insurance company and so your insurance card is not fake? Every sane person will think your insurance card is a fake card. So it is when a custom officials asks you to present a passport and you give them this document.