Tyler Cowen argues in a TED talk (~15 min) that stories pervade our mental lives. He thinks they are a major source of cognitive biases and, on the margin, we should be more suspicious of them - especially simple stories. Here's an interesting quote about the meta-level:
What story do you take away from Tyler Cowen? ...Another possibility is you might tell a story of rebirth. You might say, "I used to think too much in terms of stories, but then I heard Tyler Cowen, and now I think less in terms of stories". ...You could also tell a story of deep tragedy. "This guy Tyler Cowen came and he told us not to think in terms of stories, but all he could do was tell us stories about how other people think too much in terms of stories."
The heuristic isn't widely applicable, but I disagree about it being poor altogether. As I pointed out above, it's not just that he defended good vs. evil. It's that he did it in the context of a presentation on a subtopic of how we conceptualize the world. He may have things to teach me in other areas, obviously.
That's why I compared it to someone bringing God into a discussion on ethics specifically. (Or, say, evolution.) That person may be brilliant at physics, but on the topic at hand, not so much.
It also occurs to me that this heuristic may be unusually useful to me because of my neurology. It does seem to take much more time and effort for me to deconstruct and find flaws in new ideas presented by others, compared to most people, and because of the extra time, there's a risk of getting distracted and not completing the process. It's enough of an issue that even a flawed heuristic to weed out bad memes is (or, feels - I'm not sure how one would actually test that) useful.
Okay, I'll grant you that. It's better to have a sufficiently strict filter that loses some useful information than a weaker filter which lets in garbage data. I would presume (or, at least, advise) that you make a particular effort to analyze data which you previously rejected but which remains widely discussed, however - an example from my own experience being Searle's Chinese Room argument. Such items should be uncommon enough.