1. My observation has been that there's a tendency for people with lower innate levels of rationality who are exposed to rationality to adopt "rationality as attire" analogous to Science As Attire. People can nominally become more rational without this having a deep impact on them, and this can give rise to an illusion raising levels of rationality is easier than it actually is. I have limited data and the relative significance of this factor is unclear to me.

Guilty! ;)