That commentator thinks you want a cup in the left wrist retained through impact - for Curtis? who has a fairly weak grip? Someone like Azinger 'may' get away with it, but the handle better still be ahead of the clubhead!
How did they get their job?
As for Couples, I can certainly understand the 'less is more' approach, but you need some luck, natural skill, or some key knowledge before you can get there, at least most people do.
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Simplicity buffs, see 5-0, 1-L, 2-0 A and B 10-2-B, 4-D, 6B-1D, 6-B-3-0-1, 6-C-1, 6-E-2