Impressive demonstration of the 787!
I’ve seen film of the Sikorsky CH-53 doing loops, barrel rolls, aileron rolls and a Split-S. The aileron roll was also filmed from the cockpit.
Sometimes manufacturers will pull out all the stops (to use a musical analogy) to demonstrate their product!
BTW, sitting still on a runway, side-by-side, the CH-53D would beat an F-4 Phantom to 4,000’ altitude, an A-4 Skyhawk to 5,000’.
Ericson skycrane holds the worlds record to 10k, for choppers.