It doesn't help his cause that he continued to promote this study's findings even though he knew they didn't replicate.
[0] https://statmodeling.stat.columbia.edu/2021/08/19/a-scandal-...
[0] https://statmodeling.stat.columbia.edu/2021/08/19/a-scandal-...
I think the comments on this page vaguely mention other things, but couldn’t find much concrete last I checked