With all the information that is at our disposal, one often has to pause, take stock and try and separate fact from fiction and recognise that what was once fiction is now fact.
I had a girlfriend whom one could call a conspiracy theorist. With hindsight I would now clinically classify as having paranoid delusions. I never called her 'crazy' or mocked her beliefs. One persons religion is another's delusion. The one thing I did ask of her was to question the motivations of those providing the information.
I asked her "Does what you believe leave you in fear? Are you now frightened to go outside?" "If so, you should question the motivations of those you would believe. If the end goal is you living in fear, maybe 'they' don't have your best interests at heart.".
I also remember saying "While you worry about the royal family being part lizard and the airplanes vapour trails in the sky being chemical experiments dropped from above, there are so many things happening that one can prove you would really be frightened.