I did have a similar need. Built it around discord as a bot that would parse links and the various filetypes associated (github repos, tweets, blog posts, pdfs...) to both archive the content and extract some quality metrics / insights.

I'd say that summarizing only is a bit sad since you go away from the actual substance, but at least it helps targeting what you actually want to spend time digging into. Still a bit worried about where we are going to end up if we only read recaps of recaps of recaps (reminds of me of Fahrenheit 451 when the main character talks of books being abridged, then people reading recaps of these recaps)

This maybe an unpopular stance, when i read to learn something new or a fictional story, i noticed AI summaries misses the nuances of good writing that our brain intuitively picks up.

For some reason (maybe there is a psychological explanation), information retention is better when i read from the source rather than an AI summary.

Reward of learning something new in its original form, vastly outweighs ‘time saved’ by AI summaries.

What works for me, pass 1 is scanning through original text, pass 2 is digging into areas that needs deeper understanding and pass 3 is assessing understanding using AI summaries.