In the new-age world of a-rse covering, flying schools like to cover themselves and not have the finger (or bone) pointed at them when something goes wrong.
In my AFR the instructor was grilling me about how private flyers like me are the dangerous ones out there with no extra training and we only fly with an instructor once every 2 years and private guys are the ones that often want it done as cheaply and quickly as we can. He certainly has a point and is possibly right in many cases.