[zeusflight]

I agree with your concept. The main problem though, is that each of those code hosting web app is a silo of its own. Any new contributor will have to create a new account for each of the self-hosted projects. Youtube-dl is one of those projects that can't survive in such an environment. Sourcehut is free from such requirements - but many complain about difficulty of email-based workflow. Another option is the upcoming federation protocol from gitlab.

[zxcvbn4038]

There is also https://github.com/cjb/GitTorrent but I have not used it myself.

[zeusflight]

Late reply, but replying since you mentioned gittorrent. The project's author recommended [1] the Radicle project (https://radicle.xyz) instead of gittorrent.

[1] https://news.ycombinator.com/item?id=24876815