Wasn't Derren Brown's expose of American 'faith healers' timely? Do you think he did a good job of proving how?

Sadly, I didn't see it but anything that prevents people from falling for such, as someone has said, 'charlatans' is good. How can they sleep at night if they go around presumably deceiving people, whether for money, entertainment or both. These folks give genuine Christianity a bad name if they do actually pretend to heal through the LORD God.