What's kind of interesting is a lot of the target SO questions are implicitly opinion-based. For any "How do you do X" there might be multiple ways to do it so the question is actually "what's the best way to do X" which is up for anyone to interpret "best". And this tends to work out nicely, you'll often see multiple answers where the top upvoted one is not the selected one, or some answers build off of other ones and describe why they think it needed updating. This kind of nuance and seeing multiple, competing answers is often pretty helpful while you're learning.

Plus some of the best, most interesting questions on there are "community wikis" which often tell you they should have been flagged as opinion based but are preserved for historical significance.

Because of that I really don't see the point in being so dogmatic about closing opinion based questions. Even something like "emacs or vim" I can imaging being a useful question, with a highly upvoted, thought provoking answer arguing each side.