How about, polarization is highly compressive and humans have limited time and mental resources to devote to the many competing concerns they encounter. Those

How about, polarization is highly compressive and humans have limited time and mental resources to devote to the many competing concerns they encounter. Those issues that they sense are important in some broad abstract game of value creation and control, but that don't have an obvious impact on their immediate sense of agency or leverage, get heavily and "lossily" compressed into extreme min-max caricatures or silhouettes as a heuristic compromise between the infinite nuance/complexity rabbit-hole of rigorous intellectual honesty and very finite human capacity for attention.