Proposal to allow reality check was rejected, hard. See Should we finally allow reality checks of other plot elements?
At the same time, there are questions like these two:
Committing suicide by using paper sheet as blade - single person plot of framing his wife, no world changing event in any way, and it stays open.
Can a hero survive many battles in a realistic medieval fantasy setting? - before edit it was borderline. After edit it is about famous, unique hero, not just something that could be related to any soldier on the battlefield.
So are we actually allowing some plot element reality check? And where is the border? Why some get closed and others are left alone?