Boomerism: “A conceited refusal to accommodate one’s worldview to new information.” (“Accommodate” is used in the Piagetian sense here.)
E.g. A Boomer’s worldview is stuck in 1969. Vox’s worldview and writing have not changed since January 2017.
A person without accommodating faculties relies entirely on counterfactual reasoning for assimilation, i.e. “how does this prove my existing models of the world?”. (Fox prefers: “In which way does this [piece of evidence] show that I’m right?”) Just as all incorrectness is subversive and all deception is protectively insulating, all conceits are ego-protecting in origin and function. The strength of the conceit is proportional to ego investment in the self-serving narrative, and I have a hunch that loss aversion also plays a multiplying role. So if a person has X ego investment in their financial situation and a conceit has allowed them to make Y dollars, only a loss of 3*X*Y dollars will cause them to question it.
I found a description of a bias in investing that explains this in a bit more detail. These screenshots are taken from here.
Just imagine this bias inflated out of all proportion because the upside of growing up in the biggest economic boom in history means that the factor Y in the formula 3*X*Y is huge.