I did. The two signal core can still be balanced/differential (ie 180 degree phase shift) even if the cores are separated. Perhaps you meant to refer to the fact that they would not be shielded by the earth if they are separate (to minimise interference), well if you read the brochure, it states that not only are they shielded but there is extra protection at entry and exit points.
I agree with you in the main and done my own pointing and laughing, but the fact remains that if these products do not perform as stated and truly are woo,it should be easy to debunk them in a scientifically rigorous manner and that is something that this thread does not do. Pointing at things and saying "thats shit" doesn't mean a thing even if it is shit.