I think it’s so people can “remote control” from their phones even if their computer is offline, via a container somewhere. Then they can get back to local dev, syncing the changes from their GCP bucket. Seems reasonably useful to me - not give-Elon-my-entire-repo useful, but useful. The fact that they made it something you can’t opt out of and wasn’t disclosed at all really reinforces that they shouldn’t be trusted with it.