Religion has no place in the classroom, in the halls of ivy, in our codes of ethics, or in deciding how we express ourselves, and almost all of us spontaneously understand that and see any misunderstanding of the premise as backward. Yet since about 2015, a peculiar contingent has been slowly headlocking us into making an exception, supposing that this new religion is so incontestably good, so gorgeously surpassing m…
I've found people who build an identity around hyper-rationality (e.g. logical positivists) to be -- on average -- some of the most emotionally-driven people. For example, they will have scathing, visceral, passion-fueled outbursts against religion (often despite knowing very little about it, save for the New Atheist talking points). When you try to point out that they're getting impassioned, they deny it. I think this denial is earnest; they might notice their heart-rate increasing, but they will tell you that there is a rational reason for it to be doing so, and that it is therefore not clouding their judgement nor stunting their curiosity for the subject of discussion.
In exactly the same way, I suspect the people running from "American Protestantism" hardly know what it is and hardly pay attention to it, hence your observation.
"There are none so blind as those who will not see."