>HN users have an intense emotional relationship with the front page
If a "greatest 80s hits" radio station started broadcasting music from the 00s and people got pissed off you wouldn't say "listeners of this station have an intense emotional relationship with it". When they tune in to the "greatest 80s hits" station, that's the only thing they're looking for; they don't want to listen to random songs.
You're trying way too hard to make this about bias. There are more charitable and simpler explanations, such as signal-to-noise ratio and the expectation that submissions to HN are focused on geek-oriented science and tech topics.
The reply you are quoting is currently at -3. Voting is more about about affecting visibility than whether one agrees or not. Or ideally should be. Does this tell us something? Doesn't it kind of prove my point for me?
As far as I'm concerned that it's downvoted only "proves" that people tend to prefer more substantial conversation than this. If you had posted something of value I wouldn't have downvoted it, even though I probably would have disagreed with it.