Is this the new "Solution: Use Regular Expressions"?
There is a good reason tutorial style documentation is linear. Humans can keep track of what page of a book they are on, not which nodes of a graph they have visited.
Otherwise this doesn't add any new insight that wasn't there when the web was created. It's basically talking about hyperlinked documents. Identifying it as a graph doesn't help understand it any more than identifying the rotational groups of NaCl molecules lets me understand why they taste salty. It's useless structure/abstraction hunting.