That is a very relevant technical comment and surely one which the boffins at the manufacturers should specify
That's what training is for.
Manufacturers don't talk directly to crew except via "must do statements" approved by the FAA, and communicated by the operating certificate holder.
I have seen numerous cases of training sylabus that left open or unsaid the reason why. The answer was available only going through the instructor and his or her interpretation. In many cases the background explanation was not critical to flying as long as you followed your training.For those few cases where you feel it important, start by challenging your instructor
