This does sound plausible:

1. that the people who decompartmentalise crazy and do crazy stuff - fundies, cultists, fundie cultists - have a strong aversion to ambiguity, subtlety, irony;
2. that groups with weird ideas who are not averse to ambiguity, subtlety or irony are less likely to do crazy stuff.

The first I think is obvious, the second as a positive result would be somewhat surprising and worthy of investigation.

I also suspect that a lot of romantic objection to rationality and science is that they see science as an example of group 1 holding that anything that can't be measured doesn't exist and throwing away important detail.

I wonder how we would meaningfully gather numbers on such things.