I wonder whether there's something deeper going on here in the world. The explosion of content on the Internet in the past 15 years has resulted in a great deal of high quality articles and long form journalism becoming readily available. Perhaps books were what we put up with when there was just less quality writing within reach. But now with heightened expectations we grow tired with the occasional rambling, repetition and longueurs that previously we would just power through out of habit.
I'm not arguing this is the case. But it's something I've wondered about as a possible explanation for why books are less appealing to me now.