I'm going the opposite direction. My seven year old enjoyed "facts" when he was in K. It was a good time to teach facts (albeit a higher level-multiplication instead of addition). He loves non-fiction, books with a lot of action and "plot," and math calculation that he can accomplish efficiently.
He was/is highly impatient with concepts that required long spans of his attention, large amounts of writing, and endless lecturing over "deep" topics. I don't believe it's related to his intellect as much as his maturity.
