Making mockery of people’s belief is a sign of low intelligence.
Intelligent people understand the complexity of belief. So if your response to someone’s belief is mockery instead of curiosity, there’s a problem.
High intelligence usually comes with intellectual humility, because the more you learn about the world, the more you realize how much you don’t know.
That’s why uriosity requires intelligence and mockery usually replaces curiosity when someone lacks the ability or patience to understand.