Pisses me off seeing people fishing this way. The 2nd video you mentioned is not up, but we all know what happens. Opps, wild coho, fish is half dead on the rocks, fish gets tossed (or booted) back in the water and likely dies afterwards.
I avoid fishing spots with this kind of water near enough for me to see. It pisses me right off seeing this, I often end up saying something, sometimes get into a confrontation, more or less ruins my day. And I'm out to enjoy myself and relax! Best to steer clear of such snag/dip holes.
I really wish there was some sort of test one had to pass to get an angler's license. Want a salmon tag? That's another test you must pass. Yes and these tests should be available in French, Chinese, Korean, and so on.
Seems fair that if one has to take a course and pass a test to hunt, you should also have to for fishing.