How do you teach relative keys to new musicians? was close-voted as "Too Broad". A comment was made that:
a "how" question needs to set out some criteria, otherwise that's a purely subjective judgement.
I'd suggest that ignores the inferences that a human being would usually make - e.g. that the question is asking for good ways to teach that topic, and that there are certain somewhat common assumptions that we can make about what 'good' teaching methods are (because we make those same assumptions on other questions about how to teach!)
Another recent one was originally worded "What are the best pentatonic scales to play over a major chord progression?". This one has been close-voted as "Opinion based".
I can see that the phrase 'What are the best...' is always going to represent a somewhat Pavlovian stimulus to those aware of the "Opinion based" close reason, myself included! However, again, I think this is just a fairly natural human way of asking a common kind of "what scales fit" music theory question. In fact I wouldn't be surprised if the information needed wasn found in answers to other questions, but at least if we'd voted to close as a duplicate, we'd have pointed the asker to at least one duplicate.
Perhaps I'm missing something, but in these cases, might we have judged the questions by rather 'inhuman' standards?
(I'm not trying to nit-pick unnecessarily based on just 2 questions; I think there are other similar examples that pop up now and again. The word 'recommendation' can often bring the close-vote vultures swooping too, for example, even when a question isn't necessarily looking for recommendations for specific equipment).