The reverse. :)
> So why not just have a stateless solution? (aka just linking to ..page=2 as suggested?)
You seem to have missed the point that, if you wait long enough to advance to page 2, the page that logically follows from the page you're viewing no longer exists (along with the page you're viewing). In other words, assuming that the HN content changes between your initial view and clicking "More", the new page 2 may contain what page 1 contained, and people will complain that they're looking at the same items on page 2 that they viewed on page 1 just five minutes ago.