This reminds me of a famous saying, I think P.T. Barnum said it, "There's a sucker born every minute."
But perhaps it also could be said that a person's state of mind could contribute to how easily fooled they are, or are not.
Just as some people are more prone to hypnosis, or addictions, etc., I would venture to say that some people are more prone to being followers,
Forum:
"Cults," Sects, and "New Religious Movements"