Bob, I think you should have this conversation with someone like Bruce Brisson (Monster, MIT cable designer -- invented the "shotgun" SE cable) I don't think he'd agree with you.
Well, of course he wouldn't. It would be very bad for business. But that's how these cable charlatans operate. They take a basic concept, like the speed of extremely high frequency signals, and improperly claim that it applies to audio frequencies as well. That's what turns it into pseudoscience. It only works because credulous consumers are willing to believe it.