Final piece of what puzzle?

We can do big federated/distributed development with git at the project level. See the linux kernel.

If the goal is fancy UI then there are alternatives.

If the goal is to do a big multi-git with cross repo issue tracker, then that implies either:

- you're a public site for random repos like codeberg

- you're a special purpose forge and identity management is a big issue you want full control over.

IMO - For this to work, they should go with the latter and not try to offload identity into some federated scheme.