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Wouldn't it just be written off as a conspiracy theory that provides little to no evidence for its claims?
If the only thing that gets this on HN is Seymour Hersh's reputation (which has lately become somewhat questionable) then you might want to reconsider. Plus, the quality of the comments has not been very good so far.
This is an actual case of speaking truth to power. He clearly (and rightfully IMO) does not trust the US government and his "somewhat questionable" and recent work has continued that trend. Is it any surprise that the same institutions/people that continuously carry water for the government now rush to label him a conspiracy theorist?
Both were corroborated with evidence. I'm scanning this post for new evidence and coming up empty. The fact that American action was technically plausible has always been known.
One might twist Hersh claiming he has an anonymous source as new information. But that's the closest we get. On its own, that's not sufficient to advance the discussion in a meaningful way because it presents no new facts.
I can't find any proof whatsoever as to who actually did it from the western authorities claiming to investigate it either though. In fact, there's been little to no news or updates at all since the incident.