Sometimes, as in the referenced article, all the information can be a henderence to putting together a good system. Neither of us would have gotten anywhere without an open mind is all I'm saying.
As an example, I borrowed a multi outlet power piece from a store thinking it may do something, the guy throws me a power cord to try as well, I sort of laughed lightly but took it. I at least tried it. The outcome, I ended up taking the outlet piece back and bought as many power cords as I could replace.
I remember first starting out and learning about phase of speaker wire, splicing is bad, etc. I didn't even hear of higher quality cables until early 90's when a place I worked at picked up Audioquest. Then it was only speaker cable in bulk.
I think people in the hobby have to experiment for themselves as there are too many idiots like Ethan Weiner deliberately misleading people for some reason. So many out there ragging on cables and tweaks who won't even try it.