At some point I decided that abandoning social media as a whole would be a tremendous task because of years of being 'trained' by tech... Now I separate useful and useless social media. Shaping my perspective this way helps regulate my Internet use a lot.
I think if you're disciplined in your HN use - like, check the front page twice a day, not a few times an hour - then it's basically a community-curated newspaper. And while newspapers may not be particularly healthy, they're probably better than most social media.
HN content tends to be longer-form which I feel is quite different from the typical infinite scrolling for quick dopamine hits on sites like Reddit or Twitter or Facebook.
Isn't reading a book the same, by this definition? You could say that when picking up a book you do control the topic (while in social media it is others), but this is an illusion if you do not read that book for the second time.