I stated it in this somewhere forum before. Frank Robinson intended to create a helicopter for experienced pilots to fly on their private purposes. It was not intended to create a training helicopter.
But the helo is cheap in purchase and operation. So many, many schools took up this type. They got many students and made some money (still make). Fatal accidents, however they occurred, lead to safety regulations.
I’ve learned my helicopter skills on the Bell 206 Jet Ranger. That is my type of measurement. As I got involved into Robinson helicopters I saw that there are other limits possible. Officials decided that this limits are save. So my understanding of safety, reserves, limits, is a private one.
I can only repeat myself again: it depends on the people flying the machine. The decisions made in any situation. It is the man, who flies, not the machine. The machine is the tool only. And it depends on how this tool is used.
To me it is important that young students get the best possible training to know about the possibilities of this tool, the range of decisions possible, how to apply them (and stand for it!) and finally to survive the flying.