I haven't read the actual article yet (will do soon), however I don't regard some of the video scenarios as examples of bad monitoring. Take the Dash into Exeter with the strange non-normal. That to me is clearly a lack of decision making and judgement, pure and simple. The example of the high authority gradient cockpit an example of appalling leadership.
In my view, substandard monitoring can only be identified as a causal factor when the operating environment was conducive to effective monitoring in the first place.