Think of the audience as programmers (as opposed to "tech" like startups and venture capitalists and that sort of thing) but otherwise posts do not really have to be technical at all as long as they might help someone. I wrote a post about fitness which really didn't have anything to do with code, but was directed at programmers and the things we deal with in our careers/life.
So I'd say the technical/non-tech isn't as important as knowing the audience. If you are an experienced programmer with a story to tell, it's definitely appropriate. Just use titles that express the value of the post.
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