Please see related Should we finally allow reality checks of other plot elements? - answer was generally no (-7 score).
I believe that you are misrepresenting the vote on that question. The title says, "Should we finally allow reality checks of other plot elements?" However, the body says the reverse:
A: Create a new site for these.
B: Create a reference list with links to the other, more appropriate sites (Physics, Biology, etc...)
The presumption of that and the stricken out option being that the questions are currently off-topic.
Further, if you look at the answers, they argue that the problem is not too story-based.
I.e. I don't see the vote as being on too story-based but on the particular phrasing suggested:
The question involve too many alternative possibilities, that are equivalently likely, and arose from unknown factors.
That particular alternative definition was struck down.
The problem to my mind is that you are misunderstanding what "too story-based" means. Its meaning is that people are asking "What should I do?" You seem to be applying it to any question that mentions the story.
From the FAQ:
Asking about plot elements such as the actions of characters, rather than about the world in which your story takes place, is off-topic on Worldbuilding. Capabilities of characters within a world and creation of groups of characters (like nations) are on-topic, but questions must focus on what is possible or likely to develop, not what someone would or should do.
Emphasis removed and added.
This is clearly a capability of a character within a world and thus explicitly on-topic and not too story-based.