All true, but the point at which web dev more generally moved to CSS over tables was considerably later, not least because early CSS was pretty hard to find resources on and work effectively with. Firebug helped a lot from 2005 on, as of course also the browser-native devtools it inspired, but in 2007 it remained far from a surprise to see sites built in what was then still a current, if not the latest, style.
HN dates from the period I described and still uses tables for general page layout, hence the original commenter's query to which I replied.