A fairly well reasoned response to his article:
The last few years have seen a host of stories where the explosive allegation gets huge play, and then the later retraction is ignored. It seems to me that Facebook and Twitter are trying to take some steps to slow the initial 'bomb' so that there's some time to fact check things. I can't find anything in the Post stories or anywhere else to say how they authenticated the emails and other computer files. I can find numerous statements in other media saying that they can't authenticate them:
https://www.forbes.com/sites/joewals.../#28acd5eb9c41 And honestly, without some verification it's a bit hard to say why the Biden's should be faulted for not confirming that the hacked or stolen private documents are authentic.
The providence of the documents and the October Surprise timing give rise to reasonable suspicion. If the Post authors want to be taken seriously they can either give the materials to law enforcement to be authenticated or they can make the source materials and meta data available so that people can make an informed opinion. Otherwise tales of agents hacking, altering, and planting documents seem plausible.