science

AKA, I have a pre-existing worldview that provides me with some sense of identity, and that is more important than reality or truth.

This is 'cognitive bias' leading to 'cognitive dissonance' when you unconsciously or unintentionally believe in things that sound right but are later revealed to you to be false...

... And its called 'motivated reasoning' when you just actually consciously know that you're rejecting things that clash against your worldview.

Anyway all of this has been known by psychologists for what, 50+ years?

They just rarely explicitly state that this applies to political beliefs, even though there is no real scope limitation on what topic one can pick and choose acceptance or rejection on.

I suppose the only interesting part here is that people are now just en masse admitting they are fact-shunning hypocrites?

This is merely a function/mechanic of self-delusion. But, then again, I’m sure everyone here already realizes that.

I haven't read the article or study yet. But I wonder if the observation is one of "probably approximately correct learning" (PAC learning) in action. There's a book of that title by Les Valiant proposing that all biological learning works that way.