Not necessarily. At one point, before the rise of Google, most of my answers to various general knowledge questions would be more or less just a somewhat selective average of things I'd heard and read from sources. I have an educated family and background so these answers were probably "about average" for the educated but still entirely wrong a significant part of the time.

At a certain point in my development, I got in the habit of asking myself "how do I know that" and Googling if I didn't know. Which is to say I think the more intellectually humble someone is, the more likely they are actually verify their ideas through research.

The thing about all this is, it is happening in the era of Google, where if one has some humility, nothing keeps you from learning more (though having a basic background is needed to filter out idiocy also). Pre-Internet, the situation might have been different.

I wouldn't be positive about that. Someone with more intellectual humility may be more likely to seek out more information and to continue learning than someone who doesn't.

Every door of knowledge I "crack" yields twenty more locked doors.