Are you taking the piss?
Unless practiced before yourself, multiple times, it's not a skill...and that video isn't really a skill to begin with. It only applies to small gullies or creeks where both sides can easily be accessed in order to build the silly thing. Ie.... if you already have the ability to move to either side, it negates the reason to build it....
And.... in order to scale it up, you need to know how to move large logs either manually with a block and tackle/towers or with a combination of heavy machinery.
The vid appeals to soccer mums who watch Naked and Afraid while drinking a pumpkin spiced latte they got Ubered in....