If you treat a Robinson properly, and stay within its envelope, preferably as far from the edges as you can, it does its job superbly.
Get to the edges and it can slip over the side fairly rapidly, and that is where the low-timers and the doctors come unstuck.
I first encountered the R22 after 7000 turbine rotary hours, and after the first flight I was feeling a bit deflated, this little flimsicopter was a real challenge with its twitchiness and speedy responses to inputs. But I had a couple of refreshing fizzy drinks that night, and the next day I wrung its little neck and it behaved for me forever after that. Well, not really forever, I stopped flying them back in 08.