As youngsters, these people were taught that if they showed limitless faith, and they spoke to the masses, and they spoke in tongues, and they let the holy spirit enter their bodies and enthrall them in ecstasy, they would be showered with worldly goods. So they went out and they spoke to the masses of their limitless faith, and they spoke in tongues, and they were enthralled with ecstasy and they are showered with worldly goods. What's not to believe?
I'm surprised that you didn't ask the much more obvious question: why didn't he include the option that the power of the Lord Jesus was flowing through Hinn's fingers and embracing the true believers.