Do I have to repeat this over and over again? If these non-profit open-source projects [0] are able to self-host a git solution like GitLab, Gitea, cgit or Phabricator instance somewhere, surely your team or open-source project can too.
Even a self-hosted GH Enterprise would suffice for some businesses but this would be overkill for others. I even see the Wireguard author using his own creation (cgit) to self-host on his own git solution for years. [1]
This is problematic since many JS/TS, Go and Rust packages are on GitHub, which many developers rely on. Thus, it would be risky to think about tieing open-source project to (GitHub Actions, Apps, etc).
Wait, will you really repeat this until you no longer see a "github down" link on HN frontpage?
That is dedication.