Well, delusional idiocy might be taking the description of an upgrade experiment a bit far, it can be delusional idiocy which finds new things, and most here I think enjoy this experimentation, I do - change the sound profile, experiment..
In my case, Bryston the company is about great audio - but not completely, they are a business whose mission is to move boxes, I can very well see why they wouldn't install €100 German cable - and not even for all runs in the amp. What they used was a business decision. I ordered the cable, let's go, let's see.