> If I was working for GH would I be selfhosting forgejo?

Why not. But you are saying github as a dumb backup makes sense when you do self-hosting. I don't think you really believe that.

GH as a backup and a downstream public mirror for a self-hosted gitea or similar is entirely purposful. None of your comments have made any sense.

Yeah I should've asked why they are self-hosting in the first place. I was wrong in assuming that they wanted to host it themselves (that is, avoiding an external dependency).