DBT! DBT!
Why do they always ask for the questioning party to provide proof that the claims are bogus? Because they cannot provide any to back up their claims.
Let's put it this way: Earth is flat. To a person who can't look past their field of vision that is true, TO THEM. Take them up into the sky and SHOW them, well then they can believe it. So, if a $1K cable makes my sound better, then where is the proof?