To be fair, Github has several magnitudes higher of users running on it than Codeberg. I'm also a Codeberg user, but I don't think anyone has seen a Forgejo/Gitea instance working at the scale of Github yet.
To be fair, GitHub has several magnitudes higher of revenue to support that. Including from companies like mine who are paying them good money and get absolutely sub-par service and reliability from them. I'd be happy for Codeberg to take my money for a better service on the core feature set (git hosting, PRs, issues). I can take my CI/CD elsewhere, we self-host runners anyway.
I think the idea is that a Forgejo/Gitea instance should never have to work at anywhere near the scale of GitHub. Codeberg provides its Forgejo host as a convenience/community thing but it's not being built to be a central service.
I don't think OP was making a value judgment or anything. It's just weird to say you won't consider Codeberg because you need reliability when Codeberg's uptime is at 100% and Github's is at 90%.