Hardly. I guess I should shop at home depot and walmart for my "hi fi" system then? Or better yet, please provide the list of items I should purchase so I can correct my errors!
I never once said where you ought to buy your cables. The reason for suggesting speaker wiring that has a total loop resistance of 0.1 ohms (some say higher is acceptable) has nothing more to do with other than ensuring that the amp/wire resistance is not so great that the frequency response of your speakers is not unduly influenced by your speaker's impedance curve. IOW, having wire that has too great of a resistance, or for that matter using an amp that has a large output impedance (low damping factor) such as some SET's or OTL's, will in effect act as an equalizer and the frequency response of your speakers will start to resemble the shape of your speaker's impedance profile. If you or for that matter anybody wants, PM me with an email address and I'll send you a copy of Fred Davis' paper on Loudspeaker/Cable interactions paper that also appeared in the JAES. It'll discuss the effect of wire electrical parameters and how that influences matters.
With respect to interconnects, they vary even less. There, it's mostly a matter of what the source/destination impedances are with net cable capacitance playing the largest role.
It amazes me how many people hang on these forums who purportedly support audio or video endeavors but want to cut everything and everyone down as idiotic which flies in the face of helping others be enlightened as to what they can achieve in sound or video.
PAD, it can take a longish answer to properly respond to what seem like simple inquiries. There are in fact products that respond unpredictably to some cables. I'll give you one example. There are others. Some amps such as Naim's early endeavors, were unstable with cables that even had a modicum of capactitance. This instability manifested itself as oscillations that not only generated audible distortion products, but also caused the amp to heat up. The more the capacitance, the worse the problem. They solved the problem initially by not admitting to a design fault with the amp, but by specifying the type of cable that was needed. Theirs. One with low capacitance. Later they introduced proprietary connectors and shortly fixed the design fault of the amps. Some Adcom's also have issues with wires from Alpha Goertz, quite possibly the highest capacitance speaker wire on the planet. There are work-arounds though.
If you know what the parameters mean then you're in a better place when it comes to picking out your cables. This doesn't mean you buy the cheapest, but it does mean that you're now a smarter consumer and can recognize what's relevent and what's irrelevent in sorting through the marketing technobabble. It is NEVER in a manufacturer's interest to unequivocably prove that their cable is audibly different. That would set them up. Better to rely upon allusions and testimonials.