It's cool to see such an impactful project choose sovereignty. I hope more projects follow their example.
If you're a backbone-of-the-internet project like FFmpeg is, living on GitHub seems horrible. You will be subjected to thousands of low quality pull requests and issues from people searching for typos to fix, adding a line of white space for a contrived reason, or similar nonsense changes. Just so they can put "FFmpeg contributor" on their CV (or whatever).
If you're a backbone-of-the-internet project like FFmpeg is, living on GitHub seems horrible. You will be subjected to thousands of low quality pull requests and issues from people searching for typos to fix, adding a line of white space for a contrived reason, or similar nonsense changes. Just so they can put "FFmpeg contributor" on their CV (or whatever).