Nobody is asking you to be onboard. If you are happy with your system then why spend more money? If you just want to accuse others of being fools, then I guess that nothing can be done.
Well designed power supplies are important, but I have to believe that at the level most of us purchase, that this is a given.
You want to understand equipment and I want to listen to music. So, my approach was to rely upon a few people to assemble my system. One sang the praise of Shunyata power and cables. I believe that it takes a major investment in conditioners/cables to be able to verify, or refute the sonic improvements of this equipment. If you cut corners, then how can you be sure that you have tested the technology. Given this as my approach, I ultimately purchased Shunyata’s top conditioner and cables with the understanding that I could return everything for a full refund. Even better, I was able to use the vendor’s shipping department on items, such as cable and a phono preamp that I didn’t like and they charged me little for shipping. So, I read all of the Shunyata marketing information, had a recommendation from someone I trusted and then listened to the results. Again, I purchase based upon results, but those results are in the real world and not just between my ears.