I see Four common denominators within the audiophile "groups" that believe in expensive interconnects, power cords, and speaker cables.
1. Usually far more money than knowledge of Electronics and Physics. ( I guess that is quite Obvious, but....)
2. Display a personality that just has to overly describe and embellish how great their purchase was and how much better it sounds than run of the mill products. (As if they require attention, or seek agreement, possibly to rationalize they made a great choice?)
3. Seemingly lacking in any knowledge about the actual human hearing process, and a complete disregard for believing their hearing is fallible in regards to any of the well documented hearing/cognitive processes, such as bias, expectation, post purchase rationalization, and audio peer pressure.
(It is as if they are only semi-human and have abilities and powers beyond the mere human audiophile)
4. A personality type, that believes "what they think" is obviously what they are hearing, but are unable to substantiate what they believe they hear to any real world comparison.
(Blind testing, and double blind testing , No way! Even A/B comparison is useless as they "Know what they hear")
I am sure I missed a few key points, but to me that sums up the Cable/power cord/interconnect people.
Very flowery descriptions, and grand claims, but never able to back them up or substantiate. "Just believe me, I know what I hear!!"