Ah that makes sense. The drawing quality was all over the place, village "icons" being very detailed, mountains designed childlike, boundaries drawn in a vector based app, etc. What made me frown was, probably, the lack of in-world consistency: the map seems like drawn from Baru with her own commentaries on the various dukes, but at the same time, the fonts are obviously printed in in-world impossible jet printers (and so is the smooth sea).
Even if it becomes rougher and cruder, a hand drawn map of Aurdwynn could almost become an in-world item designed by Baru herself while travelling to this new territory while on her boat, the notes added later. Even if ignored by the book and "not confirmed" by the author as such, it would at least be an interesting thing. As it is, it's just weird, cognitive dissonant stuff.
But I'm diggressing too much on an almost irrelevant detail.