> Hacker News showing its true colors here

HN is a statistical cloud of millions of people. Since you're commenting here, you're as much a part of it as anyone.

A run of comments sharing a common quality doesn't show anything about "true colors"—pure randomness exhibits the same patterns. What happens, though, is that after seeing a few (say, 3) comments taking an offensive or opposing position, people feel surrounded by hostile voices, and that feeling 'sticks' to the community in the form of the perception "HN is X". HN isn't X. It just feels that way after a few noticeable signals in a row.