Apart from 170's statement that he was a plank instructor I can see none of his points being applicable to fixed-wing only operations - he makes some very valid points, the main one being that Standardisation is paramount and can be taught equally by an old-timer or an relative new-comer.
I've been in the teaching/checking game for nearly thirty years, some military but mostly commercial and I've met some really good and really bad old-timers and some really good and really bad newbies but given the highly technical aircraft we have today I think there is a place for both. The technical simulator instructor can be well supplemented by the old-and-bold Line Trainer, just so long as the old-and-bold uses his/her experience along with sound Standardisation...
Stay safe
Wiz