Accessibility to newcomers in story lines is a non-factor in today's age. The internet is a thing. People have devices in their hands that they can easily search anything and get caught up on any story, regardless of the issue you drop in at. I can understand "too convoluted" being a problem, but just getting caught up? No.
I don't care if it gets it's sales from print, digital or live theater reenactments as long as it keeps doing it. The book is damn good.