*****All the cable makers, accessory makers, fuse makers, etc., who talk about direction of flow are showing their misunderstanding of the basics of electrical theory.*****
I would say that they are showing their conptempt for high-end audiophiles. They are also students of human behavior / phychology and, of course, P.T. Barnum.
They,the makers, know the truth of the matter. Any high school physics student knows the truth of the matter.
In most hobbys, the members would immediately sound the alarm, when any bogus product reared it's head. In Audio, mums the word. I guess they would rather be fleeced than admit to being just mere humans, with all the sensory limitations that come with that.
Cheers