
I assume by "biggest population" they mean "compared to any specific age, race, sex, etc demographic", not compared to humanity as a whole. bit of statistical trickery.
That wimpy kid book isnt actually in dutch, its close though, if it were dutch itd all be very broken sentences and wrong spellings.
So its something closely related, a dialect or a closely related language, like frisian or south african or flemish?
Im entirely unfamiliar with any of these though so i cant say, but its not standard dutch at least
Ahhhhh that makes sense :3