good discussion on power cords

Or perhaps someone heard about using silver grease on a circuit breaker and decided they would "slather" some on the connection point point to the buss-bar, not knowing that the technique is used to grease the contacts of large breakers, not the connection points of residential breakers .... likely the result also of not knowing the contact resistance of that connection to the buss-bar.

I suppose that the parts of a circuit breaker one would slather with a silver grease, might be those that grip the box’s buss bar and Romex, could escape some.

No comments , science  versus beliefs
no electrical engineer would support the  Validity of the famous claims about power cords unless he turned out to be a cable manufacturer 
3000$ power cords, 18,000 $ speaker cables? We audiophiles are the faithful ones. Science is no cure, He is preaching to the wrong crowd

Grease is required by code where I live on main feed aluminum wire. Other than that I don’t see any reason to make a mess in the box with grease. If it’s an outdoor panel a little dielectric grease might be a good idea to help against corrosion on connections. Good video in the OP though a bit long.

I understand the tendency to compare the audiophile life with the religious life. Both are essentially solitary lives. They're spent contemplating the most abstract art form (music) by constantly swinging from the euphoria of music-driven emotion to the complex analysis of aural data. And then there are specs!
I would have freaked out in the 70's if someone had handed me a set of Nordost speaker cables or MIT power lines.

Misnomer regarding the religious life being solitary. In Christianity it is most definitely NOT solitary, except for those prevented from fellowship or the uncommitted. 
As inaccurate as saying race car drivers lead essentially  a solitary life.