Very insightful. No, I'm not being sarcastic. The internet has in general been great for literally billions of people, but it's not an unalloyed good. It has a dark side, which Adams foresaw. Some people need to be kept isolated. It's great that people who suffer from some rare condition can find and support each other. It's not so great that Nazis can.
I don't know the solution. I'm not sure anyone does, or even that there is one. Maybe this is why the rest of the universe seems so empty.