No, I don't think it would be. Hersh is inevitably part of the story because of his historical significance and the network of government sources that he's cultivated for decades. It doesn't follow that his claims are true (even if he's accurately reporting, his sources must have their own agendas). That's why I added the question mark to the title above. The story being on HN doesn't imply anything about that—only that it's interesting.
Btw, I haven't gone back and looked at the history but I'd be willing to bet that the same things were said about Hersh's reputation from the beginning. That's standard fare for counterargument.
p.s. It's astonishing how narrow the space is for someone to say they don't know the truth about X but it's interesting. If X has any charge at all, you get pounced on by people who feel sure that they do know what the truth is. But if you think about it, it's a precondition for curiosity not to already know (or feel one knows) the answer—and this is a site for curiosity (https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...). So I don't feel that this is particularly a borderline call from a moderation point of view.