Ah, see, I had interpreted the idea of an "arational person" as someone who holds some belief(s) which are neither rational nor irrational, something arational,

Ah, see, I had interpreted the idea of an "arational person" as someone who holds some belief(s) which are neither rational nor irrational, something arational, not properly handled by reason (or something claimed to not be properly handled by reason). I wasn't thinking of it as meaning that a person is never rational. It is true that different people value different things, but I think moral realism is important and important to emphasize. (Not that people valuing different things contradicts moral realism at all, or even comes close to doing so, I'm just mentioning this because of connotations and ambiguity and such.) Perhaps it would be more precise ("well, actually..."?) to say that few who value rationality believe that they are currently behaving irrationally, or, for each of their lines of reasoning, believe that that particular reasoning is not irrational? I would think that most people accept the idea that they are sometimes irrational, though they would likely not be able to point out an example of where they themselves currently hold an irrational belief. (Because, if they could, they would probably not still have the belief? Or maybe they might keep it, but, they might just think that it is an arational belief?) But this trying to be more precise might not be particularly useful, as it might already be understood by all parties involved, idk.