I think you're going out of your way to be dense. I apologized, regardless.
If anyone else cares to understand my implication...
I was commenting on the rhetoric.
Eminor3rd's post that I quoted said that since the expert luthiers (who make their living selling fancy-wood variants at custom-bass prices) believe their woods are superior, we should believe them.
I did not say expert builders are thieves and liars. I did not say they are wrong.
What I said is that trusting the expert peddlers of fancy wood just cuz they're self-proclaimed experts is the logical equivalent of trusting a . . . and I followed it with a

So get all pissy if you like, but you're really mistaking it.
Imagine the following.
You approach an expert master craftsman.
"Hello Master Craftsman. Do you believe your creations are better than ones cheaply made from cheap ingredients?"
There's no way the answer will be "no."
As far as healing with faith goes, almost no one who does it is a thief or liar. I know and fully embrace the benefits of prayer.
A few years ago there was a study conducted looking at clinical outcomes based on prayer. The patients who had people praying for them fared marginally worse than those who did not. As someone who enjoys prayer, what does this mean to me? It tells me that prayer is a wonderful beautiful gift, but it's not particularly effective for curing serious disease in empirical clinical settings.
If my son gets sick, I'm going to pray (and pray if he remains healthy too).
I shall also continue to enjoy instruments made from beautiful tonewoods.