Off topic comments belong at the bottom of a thread.
This is not HN specific. People only read headlines so they can't say anything about the actual topic at hand but they want to say something so they say something tangentially relevant.
Is that the case here? Sometimes people have something they want to get off their chest. Some of the more interesting HN conversations start that way. As well as the more boring ones like ranting about ads on the website where the article appeared.
You'll have to pardon me. It's Saturday afternoon and I'm just idly reading the comments on this topic.
It's explicitly against HN guidelines:
Eschew flamebait. Avoid generic tangents. Omit internet tropes.