An article on unexplainable (?) material properties

https://black-rhodium.co.uk/the-use-of-precious-metals-in-high-end-audio

Molybdenum? Okay. Rhodium-plated molybdenum cable…! Now that’s rich (expensive)

Share thoughts on the points presented in the article. Do you trust this “hidden knowledge”?
If it’s on point, I wonder why we don’t see much of that implemented. Cost possibly.

Speculate on what is and how to define material specific “material-characteristic impedance” and other phenomena relating to why copper and silver are not always the right choice despite what current science implies.