I'm not sure I see the distinction. I've needed help doing "X", I googled "how to do X", and found ancient stackoverflow questions. The page has recent answers ranked the highest saying things like: "in recent years you should use the Y feature to do X". I haven't seen anyone get upset that the Y feature didn't exist when the question was posted.

Questions are often timeless. The answers change and SO shows them all with their timestamps ordered by its best guess at which will help you, the reader, not the original poster.