An excellent point Averow. It takes an astute trainer to keep an eye on the overall operation when teaching, particularly when concentrating on a point that the student is having difficulty understanding. It also takes an astute trainer to know what situations require him or her to drop the teaching & get on with the operation. Of course, we don't know whether or not this was the situation during this particular approach.
I agree generally, that the safest routines are those performed by a mature crew doing a standard procedure over & over again. The aviation industry also agrees on this point, which is why we have SOP's to adhere to. However, this can be a two edged sword in that it often tends to reduce an individual's understanding & remembered knowledge of the underlying fundamentals, that were hopefully learned at the very begining of their entry into the field of aviation. This problem then lies dormant until a departure for the norm is either inadvertantly initiated by the crew or forced upon them by things outside their control. The problem is then often revealed in a situation that some recent events have proved can lead to tradgedy. Unfortunately, the very nature of aviation is such that departures from the norm will continue to occur & I believe that it will prove impossible to remove them completely.
I don't profess to have the answer, but I believe that there needs to be a better balance between SOP's & a pilot's experience & initiative, as well as between the use of automation & manual flying skills as a starting point.