Other than that, I'm with you. The need for summarizing is a symptom of our increasingly poor communication and degrading writing skills. That, and SEO optimization which attempts to hit as many keywords as possible.
We're heading in a direction where people will use LLMs to pad their writing, so it will appear more substantial then it actually is. The receiver will then parse it though another LLM, because the writing has now become to convoluted, or they simply don't have the time for a ten page essay (in which case the none padded draft would have sufficed).
Admittedly I have found a few useful cases for LLMs, mostly related to text parsing and information extraction, which can be seen as summarizing I suppose, but mostly I have a pretty negative view of LLMs. Part of it may be me getting older and not fully understanding how they work, partly it's also their deployment in areas where I believe communication should be human to human.