But it does help for decentralized development, or not? And you have this single instance of authority in almost all cases? E.g. for Linux itself, you also have

But it does help for decentralized development, or not? And you have this single instance of authority in almost all cases? E.g. for Linux itself, you also have that, and Git was developed for Linux. I think the issue is more about how to structure pull requests, issues, etc., in a better way (maybe hierarchical), such that this matches the exponential number of more communication. GitHub does not help too much with this, but it also does not really fight against this. This is basically a problem every big project has to manage in some way. For comparison, I would look at other big projects like TensorFlow, Firefox, Chromium, Linux, CPython, etc.