When the video started with the guy not using a wading staff, I thought it was a parody of some kind. He then brought one out and I relaxed, but I'm still not sure I agree with it all. For example, I consider it far more dangerous to wade in shallow water where you can break a bone or be knocked unconscious than in deep water where I think you have much more chance of escaping unharmed.

Here's a technique I'll test out on you folks. I learned it by watching a very experienced fly fisher wade a tricky spot. I was used to using my staff in one hand on the downstream side as the video suggests. But this guy held his staff in two hands straight out in front of him so that he had a tripod stance in some fairly strong current. When I tried it I felt much more stable.