Comment by noduerme
On the other hand, threading makes it possible for one group of people to spin off into a subtopic like discussing the relative merits of threaded vs linear boards, in the same general post about what Zuck said, without annoyingly hijacking the main topic. On HN I often find it useful to collapase the child responses and just read the top level, until something like this pulls me into a rabbit hole.
Threading isn’t an intrinsic sin, I think — sorting by upvotes is. The Discourse forum software allows sub-threads while still preserving a linear conversation style. You could also empower mods to spin off discussions into their own, separate threads. Points is what turns it into an inherent pissing match.