For him, the cost of editing was much larger. Condensing your writing in his time meant rewriting it more concisely, requiring strictly more time than collecting his thoughts as he went.
With LLM's, we are in a new state of the world: it can expand any one sentence off hand remark in an essay.
You seem to be talking about how one can expand information into useless babbling, whereas you are responding to a comment about condensing information into true essence.
This is about human attention and what is worth getting it. Both points are very important and valid.