That makes them not merely wrong, but dangerous to me. They will go out of their way to make my life worse, without being able to judge the cost to themselves. Regardless of what derogatory name I choose to call it, our outlook is fundamentally at odds. They've shown repeatedly that they wish to use it to harm me, and my names for them are going to be negative.
The only solution, if any, is democratic: containing the damage and reducing the numbers. They cannot be persuaded, but other people can. And unfortunately, I don't think that's all that effective, either -- in part because they ally themselves with other conspiracy theorists who insulate them from some of the consequences of their actions. They may not agree, but don't attack each other, and bolster common causes. Enough to win elections, especially when geographic, demographic, and historic quirks assign more political power to some regions than others.
If it were just creationists, they'd be (relatively) harmless kooks. As it is, they're always a step away from theocracy.
That's because you find the data persuasive. They don't. That in and of itself does not make them idiots.