I think it's actually an excellent demonstration of a sort of 'runaway placebo effect'. Let's say someone buys new speaker cables, tries them out and thinks "wow, these sound so much better than my old ones"; I know there's plenty of controversy over speaker cables but at least it's fairly plausible, even to a sane person, that different speaker cables might change the sound. Now, WHAT IF the change in sound is entirely in the person's head (as it may well be, see here)... a suitably gullible person will perceive the same sort of difference and/or improvement after any mod to their system, even ones that are plainly barking mad like the magic teleportation telephone call. It would be too intellectually difficult to see this as proof that their earlier perceptions weren't real, so they start rationalising all sorts of nonsense.
It would be bad enough if Machina Dynamica was a complete fraud; it's even more worrying to think that those testimonials are real. These people are allowed to vote!
The really worrying thing is that, even though I *think* I'm completely sane and rational, I might have similarly bogus beliefs deeply-ingrained in my bonce... and I would never know. Hmmm.