JBC - I never thought I'd hear myself arguing with you, but here goes... 😀
Training from a 10' hover to lift, sidestep and land using rotor inertia when the engine fails is one thing. You're preparing for it because you're training.
Having the engine go pear-shaped when you're not expecting it, staring in the sling mirror, a guy underneath you, is altogether another.
I always thought I could handle that situation as well, and practiced it. Then one day in Chibougamau, I had a decel in a Hughes 500D after I was hooked up and lifting three drums of fuel. Before I knew what had happened, I had settled on the drums and tipped over backwards, balanced on the stinger, the cargo pod, and the aft right bearpaw. Still hooked up to the drums.
I'm not saying short-lining should be outlawed, not at all. I agree with you that young pilots should walk before they run, and learning to shortline first is definitely not a bad thing. My problem with this article is that it makes sweeping generalizations that have no basis in fact, and uses scary language and exclamation marks!! to sway the reader to the author's point of view.
Statements like "Other than the safety of the ground crew (paraphrase, I don't have it in front of me), longlining is more dangerous in every way". What a load of horse hockey. Apart from being blatantly false, it makes the point that ground crew safety is not a consideration.