The only anchor in reality appears to be Biden suggesting that they knew how to take it out which seems like a pretty weak place to build a large story.
What I find particularly odd is that this entire thing appears to be based on a single, unnamed source "with direct knowledge of the operational planning".
But he does often rely on sources who remain anonymous: https://en.wikipedia.org/wiki/Seymour_Hersh#Use_of_anonymous...
I did find it interesting in that Wikipedia article to read that The New Yorker's editor insists on knowing the identify of all of the anonymous sources that Hersh has used when his reporting is published in that magazine. That suggests to me that while Hersh can probably be generally trusted, his work is of a higher quality when it's published in an outlet like The New Yorker, as the editor-in-chief and other staff submit it to a more rigorous internal discussion. That's in comparison to probably no internal review or discussion by Substack.
If he denied the US killed bin Laden he would be unreliable. He never denied the US killed bin Laden. You saying he said that is what is unreliable.
He said that some of the White House and Pentagon assertions about bin Laden, which the New York Times did not question in the days after (but did question, to some extent, later on) were not accurate. Particularly that no one high up in the Pakistani Army, government or intelligence knew Bin Laden was in Abbottabad. Hersh asserted that was incorrect, as were some other things.
[0] https://en.wikipedia.org/wiki/Osama_bin_Laden%27s_compound_i...