It's really not my area at all, so I don't really have any well-developed opinions on this. My comment wasn't meant to be an endorsement of the model, I was just pointing out a similarity with a view in the mainstream literature. From a pretty uninformed perspective, it does seem to me that the direction-to-fit thing doesn't really get at what's important about the distinct functional roles of belief and desire, so I'm inclined to agree with your assessment.