Yeah, the comments are an extra layer added by GitHub, and not stored in the repo itself.
You're right that it would be possible to also decentralize the comments, but that's not how GitHub does it, they just store those on their own, and there's no part of Git that is explicitly built for storing code review comments, you would need to add something on top using the "note" system or something similar.
You're right that it would be possible to also decentralize the comments, but that's not how GitHub does it, they just store those on their own, and there's no part of Git that is explicitly built for storing code review comments, you would need to add something on top using the "note" system or something similar.