It's amazing what people wind up using as the takeaway from article. This seems like the punchline of the study to me:
So basically, they found nothing. Luckily, our intrepid researchers knew that there must be racism at play, so they kept working hard:
Holy shit, look at the phrasing bolded there. Maybe it's just bad writing, but the way they wrote this up makes it look like they really did think, "well, what can we do to call them racists anyway?". Anyway, they were able to use sufficient statistical manipulation to find some completely unimpressive effect sizes that kinda-sorta support their claim that Trump supporters are racist.
To me, it just looks like another example of
Andrew Gelman's garden of forking paths, with the additional twist that the authors were wildly enthusiastic about finding
some path that arrives at their desired conclusion.