(sigh) Thanks as always for being the voice of reason here, Minh 
I just get so frustrated with this type of interaction 
I think you got at the thread we should actually be pulling on here too:
I may see if Westlaw has anything helpful on this I can find with the free library patron access.
And yeah, I agree that regardless of source or no source, the most important thing here is just making clear in some capacity that this is basically a provisional default value (to help someone surveying or mapping from local knowledge to not second-guess themselves, like you’ve said).