The dangers of it:

It is troubling that smarter people are often worse off, because they cannot recognise the biases and blunders, due to a deep, complex layer of justification they’ve narrated to themselves. It’s troubling because we expect smart people to be the ones devoid of biases more than others. However, expectation as usual takes a backseat to evidence. Perhaps all we should expect of intelligence, however you conceive it, is a way of thinking, not the content of thought. This means, even if the belief is quite absurd, the methods to get to it can be smart (sophisticated theology is like this to me). But that’s just one way and assuming one kind of definition of intelligence, which is notoriously difficult to study, let alone quantify.

However, this confirms something more practical to me. As Lehrer says, we’re good at picking out the flaws in others. If this is true, this confirms my earlier view that we shouldn’t want a world in which agreement is everywhere. We must welcome criticism and argument, since, no matter how smart we are (indeed, as this indicates, especially considering how smart we might be), we could be wrong. We are, fundamentally, flawed and fallible.

Yes, it’s quite mistaken to think that people who believe in God are stupid, but many devout atheists seem to do so.