I want to provide a counter perspective, which is that I am very happy with way in which the website deconstructs the book into short "articles".

What I mean is that I think this website (at least from my perspective) has a successful, novel approach to representing books on the web.

I don't mean to discount your point. UX issues are very serious and can ruin an otherwise carefully presented work. My point is that despite these issues, I am impressed by the creator's approach to the website.