Just read the article in the OP. An epistemic crisis about sums things up. Unfortunately, I think the crisis is even force than the article describes. It focuses on how the far right is descending into "tribal epistemology". Unfortunately, it seems quite clear that the far left is doing the same thing, and that the portion of each side that falls into the "far" category is increasing, due to the effects of social media echo chambers (as well as targetted psy ops as discussed in the other thread). The middle is increasingly being hollowed out and the fraction of people who care about understanding reality rather than defending their tribal beliefs is dwindling.
I have noticed this about myself. My core beliefs haven't really shifted rightward but the more I interact with leftist
**** the more I'm willing to tolerate from those further on the right.