I've been here for several years, and I have stated previously recently that I think that Hacker News is indeed slowly turning into Reddit or Twitter, just slowly over time, and with perhaps longer comments than Reddit or Twitter would have, but no less misinformed or poorly thought through.

I know that Hacker News has that stupid FAQ post saying that "Please don't post comments saying that HN is turning into Reddit. It's a semi-noob illusion, as old as the hills," but (as I've said before), just saying it is not does not mean it is not. The Argument from Authority is philosophically considered the weakest argument. Also I've been here for nearly four years and think this, so I don't need to be insulted by being called a "semi-noob" for voicing similar concerns.

I don't necessarily blame Hacker News - I wouldn't say there are many places that aren't also in decline. Hacker News was a superior system, well-designed, but increasingly obviously fallible as all systems are.