Then it should please you to know that is not the goal of the book. This is a grammar (a type of educational book), not a "Learn Japanese" course book, and is to supplement courses (institutional or personal) in Japanese, to act as reference and deep-dive material =)

As for odd sounding sentences: nice! let me know about them on the github repo. Link's in the side nav as the github icon, but the direct link is https://github.com/Pomax/nrGrammar/issues