"Mechanical repetition of gurbani" has been criticized, by many "so called" comrade/communist writers. Gursikh writers including Bhai Sahib Bhai Randhir Singh Ji, have rejected their writings and hypothesis. I am afraid, the above "moral" of the story may sound like that.
It is logical to say that by simply repeating some chant, parrots could not/will not escape the trap thrown by hunter. And we sikhs also need to read GURBANI with bibek budh.
Yet, repetition of GURBANI is going to save us, whether we understand it or not. Understanding is not must. Repetition is must. Even without understanding Gurbani (or AKALPURAKH), we can get in love with it. And LOVE is much more important than understanding.