“You don’t actually know whether he is avoiding books as a matter of preference, or he is unable to use books as a matter of never having been properly taught. This is a HUGE distinction”
That is a great point. I know lots of people who say they don’t like to read, but I don’t a know a single person who can read (and comprehend) quickly, who doesn’t like to read. The bulk of people who say they don’t enjoy reading simply do not have the skills to enjoy it.
I think subject matter is important. The types of material my 7 y.o. (boy) is interested in and those my 10 y.o. (girl) likes to read show some definite preferences.