I think there's definitely a distinction to be made between academic, intelligent and talented.
I consider myself very academic. I have a successful career as a lawyer and got a First in English and History in 2004 - I think there were only a handful of firsts in my year. I'm one of those weirdos who enjoy writing essays, I'm very good at exams and I had no issues consistently applying myself to revision etc as I enjoy studying. I did well throughout school, though not 'stand out' in any way (but got AAB at a level which was pretty decent back then). Obviously some level of intelligence was required but it also comes down to being able to 'apply' oneself. I don't think there are many incredibly academic/ intelligent people who don't need to put in any effort.
However, I don't consider myself particularly 'intelligent' in a broad/general sense, in that I'm TERRIBLE at some quite key subjects which come naturally to others, such as maths, chemistry/physics etc.
Similarly there are those with natural talents for creative subjects (art, music etc) which I am utterly hopeless at - but again, that doesn't necessarily mean those people are particularly academic or indeed 'intelligent' IQ wise, rather they have a natural flair for something and (usually) work hard to nurture that.
My general knowledge is also pretty poor, which I think boils down to not being sufficiently invested in learning about topics that don't naturally spark my interest. Those that have a more vociferous thirst for knowledge (and therefore wide-ranging general knowledge) could be considered intelligent in a different way.