Interestingly, none of the top posts have been about COVID, which has been arguably the biggest event of 2020 (the only thing that is related is the Twitter work forever from home announcement).
https://news.ycombinator.com/item?id=22221507
Curated Coronavirus discussions from the beginning of the year is pure history, good stuff to examine a moment in time.
If they were not flagged, perhaps one or two could have been among the top 10. But even then I wouldn't be sure about that.
For comparison, "Biden wins White House, vowing new direction for divided U.S." (https://news.ycombinator.com/item?id=25015967) was among the top posts and not flagged, because of its historical significance (per dang's comment there). I don't think COVID was less significant, but there was no obvious point in time to focus among many related stories spanning over months, unlike the presidential election that had a single victory moment.
Who’s arguing against that?