Discovery is comparatively harder - search has been dominated by noise. Word of mouth still works however, and is better than before - there are more people actively engaged in curating catalogues, like "awesome X" or <https://kagi.com/smallweb/>.
Most of it is also at little risk of being "eaten", because the infrastructure on which it is built is still a lot like the "old" Internet - very few single points of failure[1]. Even Kagi's "Small Web" is a Github repository (and being such, you can easily mirror it).
[1]: Two such PoFs are DNS, and cloudflarization (no thanks to the aggressive bots). Unfortunately, CloudFlare also requires you to host your DNS there, so switching away is double-tricky.
For it to be a social network there should be a way for me to indicate that I want to hear either more or less of you specifically, and yet HN is specifically designed to be more about ideas than about people.