But, there are? I can host a repo on GitHub, Codeberg and self host it too. Then I need to watch over main to keep it consistent between those. After that's established, I can do updates from wherever. Link'em in the README.
There are distributed forges? Yes, git is distributed, but often everything around it isn't. The case parent is trying to make, is that the rest ("federated forges") should also be distributed, not just git.
There's also a tool to automatically push it to multiple repos: https://github.com/prashantsengar/GitEcho
Disclaimer: the author is a colleague of mine
Though to be fair, what the parent meant by federated forges is different than this approach.