Wouldn't it be better if the instructor used related exercises to teach the necessary skills on and off the horse. The instructor could simply build on a good foundation. From a safety standpoint, it can be a bit of a problem when the least experienced, most at risk riders are in the hands of our least trained, least experienced instructors. Of course not, it simply means that those who teach beginners should be better trained, both in teaching and in negligence law, so that they will better understand their responsibility and have more modern tools with which to educate their beginners safely. Safety considerations top the list.
Training is important, especially formal training.
Varied riding experience is also a plus. Maybe organization and planning, but they won't help if the instructor has no experience to organize.