Smugness is definitely a problem on Reddit, but I think in the case of Hacker News you’re often dealing with older guys who grew up on either traditional forums or BBS. When you try to tell them that what they are doing is also social media, they reject it because they associate it with the networks that emerged from around 2005 to 2010, which they perceive as vapid owing to the emphasis on image over text.
I’ve always got the sense that this perception was a big reason why Redditors seem to hate Instagram so much. The algorithm does occasionally do some unpleasant things, but 90% of the time it’s great. When I read about people comparing their lives to others and becoming depressed I can’t help but feel like the app might not be the problem.
"Sure I exaggerated the privacy risk and hyperbolized my experience but it's because I'm passionate about privacy! I'm not like those losers on Facebook spreading fake news."
They're doing the exact same thing. Pseudonymous and anonymous social networks are also social networks and suffer from the same problems of discourse. The smug "we're not like the normies" attitude often makes this even worse than mainstream social networks, not better.