Extraordinary claims need extraordinary proof ... This is why correctly designed cables have a bypass cap connecting the shield to complete the circuit for RF but not for hum. We learn these things in first semester electronics.
My reporting on the value of using an interconnect that has a shield attached at end only is hardly an "extraordinary claim." As I mentioned, it’s a shielding method used by many manufacturers and users. So it’s rather odd that you demand proof, and then reject it with a wave of the hand.
In any event, no one here owes you anything at all, including scientific "proof." This is a hobbyist’s group, not a science forum.
We learn these things in first semester electronics.
I don’t think you learned everything that you thought you did.