Aeromys,
Perhaps merely accepting the short video at face value....and not getting involved in dissecting the thing would be enough for you. Perhaps it was not even a real search, maybe the "lost hikers" were actors only, maybe it was in fact a sales pitch promotional.....bottomline....it serves a good purpose to show the difference between the unaided eye and that equipped with NVG's.
I would suggest it is pretty effective at doing that.
There are many among us who have no concept of the value NVG's brings to night flying.....sounds like the CAA is among them as long as it took for them to get around to approving the use of NVG's (with restrictions of course).