Neat! Generating PDFs from RSS feeds is a great idea. Some thoughts:
I have a Kindle - something I'd find valuable would be having a digest of "Today's top stories" sent to my kindle's email address as an epub so I can check it out each day. But on Kindle, I think the 3 column layout would be too narrow to read - it makes sense on A4, but not smaller. How do you do your daily sync to ReMarkable?
> curious how others handle the "too many newsletters" problem
I like to have everything funnelled into my RSS reader, pick a few things that sound interesting each day, and archive the rest. For the getting everything into RSS part, I'm building https://mailgrip.io to help (it gets email newsletters into RSS feeds).
https://alexplescan.com