Paper is pretty upfront about that, "we provide the Open X-Embodiment (OXE) Repository, which includes a dataset with 22 different robotic embodiments from 21 different institutions". Some of the data is new from Google's robots, but the rest is not.
The author list is long because Google is a big company with big teams.
Aside from this paper, I do think that generative modeling is going to change robotics. It seems likely that large transformer models could learn to do many simple tasks in response to natural-language instructions. This could be the burger-flipping robot.
The author list isn't long because everybody at Google got listed. There are a ton of full Professors in the author list. This is a cross-university effort.
The author list is long because Google is a big company with big teams.
Aside from this paper, I do think that generative modeling is going to change robotics. It seems likely that large transformer models could learn to do many simple tasks in response to natural-language instructions. This could be the burger-flipping robot.