In reply to radddogg:
I believe climbing and more in particular trad climbing is a sport where you can't be in control of every possible "risk". Yeah... if the second were to fall on the other side, they would both die... but is the same as if riding your bicycle you would slip next to a double deck bus and fall below the wheels... Would that stop you to ride a your bike next to buses? You would not be able to ride at all , at least in London!
In my experience situations like the one you describe are there all the time... such as walking on narrow and exposed riffs, down climbing steep walls to get to a crag, easy climbs on loose rocks, just to mention a few. I believe they are all part of the adventure. There is risk on every action, is up to each individual to assess how far you want to go.
Now on this particular climb if you fall on the other side... you probably should have never been climbing, or doing trad for instance. Honestly is very unlikely almost impossible. If you have vertigo you can just walk on your arms to the way out.
However, I give you that for an instructional video I would have chose a better spot. The placements can look confusing for a beginner to get it right and understand the basic aspects of lead trad climbing.