Your opinion, many we know about in audiophile circles will disagree on it.
Even our member Steve Williams uses solar energy in his Lamm ML3 and LL1 system with great success - solar electricity is just a regenerator converting DC to AC. Renewable electricity injects electricity coming from regenerators in the mains - and there is a good probably that our neighbors have cheap noisy inverters! As we are moving to a inverter based grid system should we expect that soon people will find that their systems sound poor in sunny days and in California?
Saying something loud and using metaphors does not make it a fact. I am fortunate to live less than 100 meters away from a substation, I do not need a power regenerator. But when I owned a PsAudio P10 I did not find any coloration associated to it.
The influence of mains "quality" in stereo sound quality was never systematically studied and openly debated with proper data. At best we share experiences, nothing else.