No shadow of helicopter on ocean/shallows; lack of exhaust heat distortion/shimmer that would be nearly head on; given the use of a wide-angle lens for the copter to appear that large it would be within a few feet, but the "drone" is unperturbed by what should be a violent downwash flow.
-and -
The helicopter company would have taken 30 minutes or less for a news agency and the FAA to identify, followed by at least trying to interview the pilot or go to the owner.
It is possible the helicopter is extracted from a flight simulator and is composited with real footage from an over-height flight, but I remain confident this encounter didn't happen.