@cd318 --- I knew exactly what you were going to say. And I regret even trying it. Carry on with the snake oil theory. In fact, if you are so convinced with said snake oil theory, why do you even participate in cable threads?
P.s. you missed #3, with a reference to #1. That was the answer to exactly asked you in the first place: "...
In the meantime not one credible explanation has emerged as to why the last 2 metres of electrical cabling should matter exponentially more than the previous possible kilometres."