This is a great Audioholics article and frankly, I'm surprised that there are so many scam artists selling this BS.
I've been into higher end audio since the 1990's. I'll be honest, I buy "higher end" interconnects and cables all around. Do they sound any better? Absolutely not. I buy them for the quality and the fact that they look better with the rest of the higher end gear. No other reason.
I've gotten to where I simply can't read or participate in Audiogon anymore. It is so full of sh1t. It is unbelievable what those folks say in there. People wanting to "rewire" portions of their house with "higher end" wire. Why stop there? Why not get a golden cable laid all the way from the power company. What difference is a certain length in the house going to make if you still have a weak link from the power company. If anyone ever challenges them to a double blind test, they always come back with some mumbo jumbo voodoo BS that makes no sense in order to discount any DBT.
The absurdness about power cables. You mean to tell me that these multi thousand dollar audio gear companies have made what they believe is their "holy grail" product, only to end up being inferior, because they failed on the power cable side of it? If that were the case, they'd be selling the high dollar power cables also. Why would they short themselves?
The comment about matching a 10K power cable to a 2K phono amp not being a smart thing to do.... Why don't they use their same logic and reverse that, by buying the 10K power cable first and adding the 2K phono amp?
This all reminds me of a fairly famous double blind test that occurred at Sunshine Stereo in Florida in the late 90's. Steve Zipser (sadly deceased now) was the owner and always claimed he could tell the difference between his multi thousand dollar amps vs. cheap amps. Peter Aczel and Tom Nousaine of the Audio Critic challenged him to a double blind test and he accepted. It didn't go well for Steve. Steve was quite the character and even though he believed in a lot of the snake oil, he was an asset to the audio community. The guy had a big bark, but an even bigger heart.
If you're interested in reading about that old DBT, you can find it in this pdf article of the Audio Critic from Spring of 1997.
Starting on page 6 (pdf 7),
https://www.biline.ca/audio_critic/mags/The_Audio_Critic_24_r.pdf