[contextfree]

I guess the argument is that, while it's the same whether the user asks for "give me page 3" or "give me scrollbar Y coordinate 2160", the user is more likely to do the first or at least to care about the correctness of its result?

[iamnothere]

Why does the user need to see a page number? You could just show a “forward” and a “back” button. Keep records of what they’ve seen recently so you can replay prior pages. If they view too many pages just silently drop earlier pages; it’s a feed, not a perfect paginated list.