Not intended as a challenge, because I don't have the rotary chops, but an honest effort to learn, I think you have the Robinson reference backward. My test pilot buddy indicates the technique is limited in a light civ helo because you don't get enough excess power from the tail rotor. Leads me to believe it might be more effective in a more powerful aircraft. Although the author of the article mentions it being demoed to him in a Robbie, the namesake of the technique was flying long line in the Alps. Certainly not in a R44.
Now here is your chance to truly edumacate me. Most all my left seat time has been in an OH-58, and I have never seen vortex ring state demoed. It is clear from the article that the benefit to the technique in question is less altitude lost in recovery. So, how much altitude do you usually lose recovering in traditional forward acceleration recovery in a -60? If you can minimize altitude loss in recovery, then isn't that a good reason to have this technique in the tool box? Then there is the case where accelerating forward may not be an option. Although I don't recall if VRS was a factor in this mishap, I am left thinking in a similar circumstance, and alternative to forward acceleration may be a good option.