Reddit "smart" collapses subthreads. Sometimes those links expand. Sometimes they open new page. Infuriating.

HN does page big threads, which isn't too bad. I'm immensely grateful HN doesn't do any silly AJAX style background, progressive loading of content.

Really dislike all the new "infinite scroll" stuff.

Age range on here and tech-based outlook is much more mature than most of what's on Reddit. In many ways HN feels like Reddit when it first started. The audience and commenters were very similar to what HN is now; a lot of tech-y people and a heavy SV influence.

That addresses the cultural differences and not the structural differences, which is what the comment was talking about.