Writing is highly inherently subjective in a way that many fields are not. For example, many programming questions have one right answer that can be looked up in a standard (not to say there aren't good, subjective programming question, but it is without a doubt a more standardized subject). And there are definitely some questions that are clearly too subjective (e.g. "What is the best way to express love"), but I feel like, for the majority, the line is blurred. Like my answer to this question was accepted, but what if there are people who feel that too much character development is bad no matter the situation? While I may disagree, there's definitely not one right answer, and that seems to be subjective to me.
So my question is: at what point does a question like the one I linked to become "officially" subjective?
(Also, I'm not sure how to tag this, because I don't really feel like this is about "off-topic" exactly. Feel free to fix the tags.)