I'm a believer in knowing exactly what a problem is being key to attempts to solve it. And too many problems today I've seen attributed to insanity, stupidity, hatred, and the like. When in fact it's a sane, intelligent, compassionate individual who has simply succumbed to a deception.
A dupe is not an idiot nor evil nor crazy, but deceived. It does not do me well to either label them with a misnomer, nor for me to underestimate their intelligence, compassion, or sanity as a result of their hornswogglement.