You really don't think there's a single problem that might arise when someone were to have a large capacity for learning? I mean, sure, perhaps these problems aren't unique to people with higher intelligence. And perhaps they're correlated with other parameters, like social anxiety, etc. But surely becoming more intelligent can exacerbate these types of problems, no?

I still find the behavior odd. If someone says "I feel awkward around people because I'm short" no one responds with "that's not a problem with being short, that's just social anxiety". But when someone says "I feel awkward around people because I'm smart" suddenly everyone has an issue.