I agree that being real world does not make question automatically off-topic. At the same time, it does not make automatically it on-topic.
Answer to Should we finally allow reality checks of other plot elements? was -7 score and I believe that's the way it should stay - NO.
Adding "because I want this to happen in my world", or "This C# problem is common in my little setting of an IT corporation" should not allow to count such questions as on-topic.