I don’t have a direct answer to your question, but it did trigger a few thoughts I thought I’d share:
I miss the crosstalk between print media and online community. It wasn’t too long ago where I would go into a venue and find the local free weekly paper that led me to trawl for more online. Sites like this one fill the need broadly, and I’m getting better every month at learning to filter what I see on HN.
Location-real or virtual-is often the first way we apply a filter for interests, and it feels counterintuitive when the location has gotten dumber/more mediocre than last time I was in. Like a millionaire buying the art house theater or radio station and ruining it with scale.
I like HN because it isn’t solely tech-focused - it’s inherently focus-less - and is a jumping off point for deeper discussion as well as deeper linking to related data points. I’m not sure this is what you are looking for in a community, but your question made me think for a sec about why I value HN so thought I’d share.
I also like the sentiment I heard on related thread https://news.ycombinator.com/item?id=34406075 “I try to think of commenting and participation more as just talking to one person rather than trying to score points from the community.”