It's difficult for a complete Amateur to discern pseudo-science from the real thing.

I personally 'start' by dismissing anything that isn't generally accepted in the recording/broadcasting/mastering arena.

For example, in the quote above there's some stuff about 'Skin Effect'. I've read in a couple of places that this isn't irrelevant in audio, but often used as a cable makers crutch.

I'm not claiming 'Skin Effect' to be irrelevant - I don't have the scientific knowledge to say.

For me the term is a ''warning sign'' so to speak, that what follows may be bunkem.