After this answer and its subsequent comments, I propose a change to the "Why should this question be closed?" dialog, which is currently as follows:
unclear what you're asking
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking.
I suggest the following text instead:
unclear what you're asking
This question is hard to answer, because it summarizes a claim without referencing it. Please add a reference to and quote from the published text which contains the specific claim you want to question.
The current version is standard boilerplate, not customized for Skeptics. When a question is unclear, asking the OP to clarify and add details about the question is less informative than being able to identify and read the specific claim that's being questioned.
Alternatively I suggest that the following off-topic close reason:
Questions regarding claims that are not widely heard or read are off-topic; please see Must all questions be notable?.
... be changed to something like the following:
This question doesn't identify a specific notable claim. Please add a reference to and quote from the published text which contains the specific claim you want to question.