Internet centralized itself around few corporations, people don't want to selfhost/self publish websites, I have own devlog on github pages, and when I try to convince friends who do interesting things to start writing about them, its always "I'll just post on twitter" or "i'llshow some screens on discord" etc. Internet shrank in recent years greatly, with more and more dead places that are not updated being closed down due to hosting issues or simply lack of interest from original authors.
It gets sadder when one of corporation suddenly decides that whole genre of things is not welcomed and/or just simply pull the plug on certain functionality/content.
Same goes with old phpbb forums - everyone sits on various discords, and places-pockets of knowledge dies one by one, recently lot of 3d-design related people mourned closure of cgsociety forum.