This is a big part of it for me. The old Internet was full of individuals sharing deep passion--whether on a personal website or on a forum. There was a sense of connecting to another human being.
This is the only forum-style site I regularly interact with, and I must admit that I rarely try to remember another username here. The effect is that I interact with ideas, not people. And there is some deep connection between behaviors I might label as addiction and a felt sense of isolation.
The internet is still full of individuals sharing deep passion for all sorts of things, but only within the walls of invite-only communities you have to go out of your way to find (Discord servers, private forums) and/or make a financial commitment towards (Patreon).
Or at least it was, before LLM "enthusiasts" started leaking into these otherwise hermetic communities and overrunning formerly safe spaces with mass-produced low-effort content nobody wants to see, particularly when anyone else could prompt the exact same thing into existence.