One data point: I deleted my Facebook some time in late 2012 or early 2013. I have since deleted all my social media accounts / not join in on the rush to get new ones, with the exception of Mastodon (which I use very rarely) and HN. I don't go to news websites and just accept that I will find out about some things later than people who are more plugged in than me. When I need to know more about something in particular I will look that thing up, allowing myself to read about it on whatever source has a good piece on it, so I still consume some news but never passively.
I think even HN can be too reward-driven for me personally (I enjoy getting upvoted, etc). I've found that my relationship with all online information platforms was kind of destructive while I was doing it (things like autopilot opening Reddit in an elevator, not seeing anything and then opening another Reddit tab immediately). I've come to view information, especially on sites with an infinite feed, kind of like sugar: it's very good and can be okay in moderation, but if left to my own devices I would go overboard, so I have to specifically police myself.
I thought sticking to my "information diet" would be much harder than it is. I miss very little of what I used to consume: I reach out to the friends I want to keep up with, I look up the news I want to read, and I get to be relatively insulated from the constant torrent of negativity/targeted advertising/etc that happens on platforms like Twitter, Facebook, Reddit, etc.