That's because you find the data persuasive. They don't. That in and of itself does not make them idiots.
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.
But in my experience, it nonetheless creeps out to affect other areas of their life. YECs are often afflicted with other conspiracy theories, not just flat earthers but also climate denialsm, and these days, COVID denialism.
I find that the assumption isn't so much the teleology as the group superiority. It's not so much that the Bible is inerrant as that they are the ones who hold the truth, and those who disagree must in all cases be wrong -- and not merely wrong, but out to get them. The appeal to teleology is more about literal divine right, that "God shed his grace on thee". That leads them to make alliance with those who don't accept young-earth creationism but nonetheless share their nationalistic, chauvinist, xenophobic aims.