I'm not sure if you're familiar with public domain texts from around the 19th or early 20th century, but they were not intended to be skimmed or speed-read the way we'd skim a modern text prior to getting into a more attentive close-reading. Even their short magazine articles were actually the near-equivalent to our scholarly papers, and were often read aloud at length in parlor gatherings. So having a LLM split the text into manageable sections for you and provide a hint of what each lengthy wall-of-text paragraph will be about is actually a huge gain in readability.
I'm not sure if you're familiar with public domain texts from around the 19th or early 20th century, but they were not intended to be skimmed or speed-read the way we'd skim a modern text prior to getting into a more attentive close-reading. Even their short magazine articles were actually the near-equivalent to our scholarly papers, and were often read aloud at length in parlor gatherings. So having a LLM split the text into manageable sections for you and provide a hint of what each lengthy wall-of-text paragraph will be about is actually a huge gain in readability.