I don't think the breakthrough here is generating a 3D space from 2D snapshots. I think it's the idea that a network capable of doing that is a far, far better

I don't think the breakthrough here is generating a 3D space from 2D snapshots. I think it's the idea that a network capable of doing that is a far, far better input to training an agent than flat images, or even the ground-truth 3D space.