From conspiracy nuts to religious people, science denial is a big profit fad that has dangerous repercussions. The problem is that because of most people both lazy and ignorant, these anti-science fads are very profitable to those who perpetuate them.
Churches make insane untaxable profits because laws that were suppose to keep religion out of government have been twisted and perverted to benefit the ones selling the god concept. People prefer the easy, magical sounding excuses instead of the cold, hard, and often frightening facts.
But conspiracy nuts are the most insidious, as they have learned to imitate science, which can convince even intelligent laymen. Even religion cannot compete with sanity and reason, their leaders admit that education is dangerous to their claims.
Conspiracies have a sweeter bait though, you get to blame a faceless, evil, and unknown group of people for all your troubles. To the people buying these conspiracy this faceless organization is more believable than the faceless gods proposed by religion.
The reason is that the faceless god claims oppose indisputable facts, but faceless organizations are really close to reality, corporations fill the role. The catch is that the conspiracy nuts really don't know which corporation or organization they are afraid of, much less why the organizations would even do what they think is happening.
That is the ticket to confronting them, ask them how their bogeyman benefits from doing what they claim is being done. They will stumble as their whole story collapses.