I'm an electrical engineer and many time have serious doubts about one might consider "woo-woo" claims about the impact of more expensive interconnects, power cords, fiber optic, etc.
And yet, based on the rest of your above post, you apparently do believe that there are differences in the sound produced by different cables, despite there not being any clear explanations for why that is the case. Is that correct?
We can all agree that more expensive cables are not necessarily better than less expensive ones. But if you find differences between lower cost cables, why would there not, at times, also be differences found in higher priced cables? Value, and diminishing returns are related, of course, but only part of the story.