I've always guessed that JJG was a well-educated American....
Is that a dig at the american education system?
The guy is barely literate at times.
Long-winded and disjointed is hardly the same thing as being "barely literate."
Plus he uses too many American colloquialisms and idioms to be anything other than American.
I'd like to see an example of his writing that you consider to be "barely literate."