> a random sentence or point considered throwaway by most people and algorithms could turn out to be meaningful to me

This is what I crave for in good articles and books. There's some big insight just thrown in in the middle of the sentence because that pattern is already obvious to the author. It's also what AI-generated content is currently lacking because it sticks to the task at hand (but I believe it will change).

Also, your critique applies just as much to human-generated summaries.

My issue with it is that I don't want my browser to send home what I read and view although I guess that ship has sailed some time ago.