I don't agree at all. I think that people who challenge Amir's findings should stop nitpicking and do tests of their own. If you think that there is a different type of noise+distortion that will affect typical audio equipment and that a power conditioner such as this one will have the superior ability to cope with that type of noise+distortion, then it seems to me that the onus is on you to (1.) identify exactly what that type of noise+distortion is, then (2.) demonstrate via testing that typical audio gear really is unable to cope with that type of noise+distortion, then (3.) demonstrate that when a power conditioner such as this one is used, the problematic noise+distortion is eliminated such that it no longer presents a problem with which the typical audio gear can't cope.
The thing is, when it is thought appropriate for complaints of this sort to be registered at all, i.e., "you didn't test with the right kind of noise and distortion", it can go on forever, with no end in sight. Surely this is apparent to everyone, and as such, everyone ought to understand that if they want to assert that the test wasn't done with the right kind of noise and distortion, that they need to do what I explained in the previous paragraph.