What a load of rubbish
I have reported things on a walk around now that have lead to a flight being canx on more than one occasion, one occasion was immediately after the aircraft had an acheck, and another just after engineering did their daily.
Those baggage handlers report everything to the crew and the crew determine wether or not they call engineering
I should also say after several thousand pushbacks with engineering and ramp staff, I have encountered less problems with ramp staff knowledge of the dispatch duty, I still get engineers who don't know how to connect a towbar and then ask to conduct the cross bleed start during pushback.