Can people not really understand this? Some of those related questions are dupes, other times they are paths to rabbit holes. ycombinator does the same thing. When you guys see posts that come up that have been here before, you post links to previous discussions. I saw this recently specifically with the links to articles on Martin Couney (I had a hard time finding that because the article is so poorly worded).

Even Reddit has linkability to detect the URL and show you an 'other discussions' lens (for Old Reddit).

Granted, this is a slight taxonomy difference of 'other discussions' of the same exact topic, vs other discussions related to your topic. But I think it's a useful and helpful feature.