This is also called Eternal September[1]. And I think the Spiral of silence[2] adds to the problem, as people not only see their own opinion echoed, but also stay away from expressing it if it's not in line with the community.
The only solution to this I've seen so far is making it harder for "ordinary people" to discover the community, as HN tries to do it.
The only solution to this I've seen so far is making it harder for "ordinary people" to discover the community, as HN tries to do it.
[1] https://en.wikipedia.org/wiki/Eternal_September
[2] https://en.wikipedia.org/wiki/Spiral_of_silence