Had to admit I came to the same conclusion when I read this part of the readme:
> The NC license permits "use by any charitable organization, educational institution, public research organization, public safety or health organization, environmental protection organization, or government institution is use for a permitted purpose regardless of the source of funding or obligations resulting from the funding."
But on reading the license, personal noncommercial use is fine too. It would have helped me if that info had been in the readme!