While interesting, the author appears to be nitpicking. It does not really refute Hersh's story, because these minor inconsistencies appear in any news article, including the NYT. It is irrelevant whether Hersh gets all details right, the important thing is whether his source is correct on the big picture or not. It seems to me that the veracity of Hersh's claims cannot be decided by textual analysis, but rather by a…
“[Jens Steltonberg] was a hardliner on all things Putin and Russia who had cooperated with the American intelligence community since the Vietnam War. He has been trusted completely since.”
when he was actually born in 1959 is not a small thing. It’s simply making things up.