Almost exactly 4 years ago (07.18.15) I asked this average-awful question: Naked singularity: how would it behave?. At that time I got a mediocore answer the same day that I accepted a bit later, got some views, then the question was forgotten - common boring story of most SE questions.
Fast forward exactly 4 years later (07.18.19), my completely buried post suddenly got a huge attention. In the following few days it got two great answers, two ups, comments on answers, etc., and while I'm glad this happened, I don't really understand it. The thing that makes the most sense is that some algorithm looking for old questions found it and promoted somewhere - but why even would this happen? I see no reason. My post had no activity for 4 years, was barely upvoted, and had an accepted answer, it was a completely average and forgettable one.
Was my question bumped somewhere, or is this a pure coincidence? If it was, what is the reason?