I find it amazing that someone thinks that their 10ft cable at home can clean up a stream from thousands of miles away.
This has been shot down so many times now that it's become silly. No one is suggesting that one is cleaning up all the preceding miles of cables before it gets to your place. What one is doing is making sure that the gear is "seeing" what's at the outlet and addressing any noise issues introduced there.
That argument is the lamest of red herrings.
As for 12many's clumsy way of saying it's all the in mind of the listener, which is another way of saying he's crazy and to let it be, is downright condescending.
All the best,
Nonoise