If you think about it, this may be a true statement. If the marker is the short style, this forces a bartender to grab it lower and possibly opening the faucet quicker. this prevents foam associated with the faucet in the midway position.
As to the comments on your AB experience, there are those beer distributors who have de-prioritized draught to a point where training is nonexistent. The knowledge from AB is there. They simply wish not to utilize it. Just the same, thanks for the kind words.
Scott Zuhse, Instructor
Micro Matic Dispense Institute