Well, at least to me seems logical to not put the latest GE engine design in a public video just for demonstrating heat resistant 3D printing capability.

And about being carried away, well... is hard to not be, by just watching the sheer beauty of what this technology is already capable of, and wonder what will be capable in a few years. Right now, It is simply not possible to CNC a superb structural design like this. (by the way, is a car chassis) Try to imagine how a combustion chamber may look like with this machines. (!)