It comes up in software development sometimes, which is my day to day. It also is useful for any “fast but inaccurate approach” scenario, which comes up sometimes.
I wouldn’t say I’m proud of using it. It was already in my lexicon. (So was “lexicon”)
Here’s an article about them https://www.verywellmind.com/what-is-a-heuristic-2795235
Why do you ask?
Things that aren’t Nazis might be a good stopping point