Trust me, as an engineering major, I know what DBT is about. And the null hypothesis article is only interesting in a pedantic sense. What I'm talking about is the bias people bring to the table. If item X is $10,000 it *has* to be better than something that costs $100. And your brain will convince you that's the case. This is the bias that has to taken out of speaker tests.
If you don't believe that's the case, read some of the reviews of the $10,000 power and speaker cables. These idiots are convinced that the sound is better just because they replaced a power cord. These are other wise normal people who spout such garbage. Again, I would say it's because they paid $$$$ for it.
Do I believe $10,000 speakers are better? Probably. Mechanically speaking, I can see how using superior parts can lead to better sound. But the question is, is it worth the extra $8900? I guess that's the real question that we'll never settle on an online forum.
At the end, superior sound is in the eye of the beholder. One person can be perfectly happy with mp3 being played on Iphone buds while others *have* to have calibrated sound coming from SACD. To each his own, I say.