Yes, noticed.
Has anyone read his entire article? Does he attempt any justification for why this particular argument doesn't equally apply to the original experiment?
One principle I try to keep in mind is "The other guy is probably not a total moron. If it seems that way, you're probably missing something."
I read it. He has a section titled "The asymmetry between positive and negative evidence".
His argument is that a positive result is like seeing a black swan, and a null result is like seeing a white swan, and once you see a black swan, then no matter how many white swans you see it doesn't prove that all swans are white.
He addresses the objection that this leaves us unable to ever reject a spurious claim. His answer is that, since negative evidence is always meaningless, we should get positive evidence that the experimenter was wrong.
I think this is a fair summary of the section. It's not long, so you can check for yourself. I am... not impressed.
Jason Mitchell is [edit: has been] the John L. Loeb Associate Professor of the Social Sciences at Harvard. He has won the National Academy of Science's Troland Award as well as the Association for Psychological Science's Janet Taylor Spence Award for Transformative Early Career Contribution.
Here, he argues against the principle of replicability of experiments in science. Apparently, it's disrespectful, and presumptively wrong.
This is why we can't have social science. Not because the subject is not amenable to the scientific method -- it obviously is. People are conducting controlled experiments and other people are attempting to replicate the results. So far, so good. Rather, the problem is that at least one celebrated authority in the field hates that, and would prefer much, much more deference to authority.