I will point out that Penn and Teller make millions every year on decieving people and getting people to believe things that are not true. So consider the source of this article.
Actually you're 100% wrong; they're magicians, but they actually are controversial magicians because they routinely explain how they do their tricks, which is taboo among magicians.
And they have a series on Showtime specifically devoted to debunking myths.
I'd rather be decieved by a magicican who admits up front that he's performing a trick than a shaman who professes to be telling the Truth.
That's not exactly true. Penn and Teller don't want you to believe what you see on stage is real. They want you to leave never understanding how they did it, which isn't the same thing. They're very up front that it's all illusion and trickery. No real deception on that level at all.