I'm so weary of this sort of 'society is in decline' clickbait articles. Let's take some minimal amount of data, analyze it by some absurd criteria, and then present as some stunning insight. There's so much wrong with this article that its hard to know where to start. The fuzziness of 'page count'. The absence of any consideration of digital readers and whether they even know the page count when starting a book. Who…
Tolstoy, for example, took advantage of being paid by the amount of content by basically saying everything twice in a different way. This style makes for relaxed reading, because you’ll catch the content the second time if not the first, but it’s obviously not necessary. Dickens, as another example, also published less-dense material on a regular basis based on his contractual obligations (his novels actually read better if you follow the original publication schedule). His books were just part of another publication, basically a newspaper. As long as he delivered a satisfactory amount of core-story each week, he kept his job. This incentivized him to split up the best parts and add some fluff.
I’m no less satisfied by a good modern book than War and Peace. I enjoy both for different reasons.