There is a high frequency of questions that ask "How can I best navigate some future event?" most of which are perfectly acceptable to answer despite people needing to account for an inordinate number of unpredictable variables.
"How do I best apply for school."
"How do I best respond to so and so."
All of those types of questions would ideally require a knowledge of the people involved at least but people still answer them based on, at best, a bit of data generalized to an almost entirely unknown situation.
Estimating the exact impact of a global, national, or local economic trends is no easier than estimating the exact impact of a global, national, or local interpersonal trend. Brexit at least has a news cycle that can update the question. But this forum isn't designed to keep people current, it is designed to entomb information and then is misapplied to things that are changeable.
If you are trying to form some sort of consistency then no keep it open, or block both. If you are going to on a whim block things that appear too frequently, then sure, but it shouldn't be on the pretense that they are unanswerable.