A topic might seem interesting, but if everyone here is just coming at it with whatever random facts and biases they’ve picked up in normal life, then the discussion has a low chance of being valuable. It’s just going to meander until it scrolls off to deep pages and everyone gets tired of fighting.
I don’t think HN needs a discussion on every topic that hits the zeitgeist. There are plenty of other places on the Internet to power discovery. My personal favorite is Twitter, but Reddit is good too. (Both require curation, though.)