I already posted a top-level comment about this but I tried to tackle this specific problem when I built Recess (https://github.com/yakkomajuri/recess) which might interest you. Never got any traction so I dropped it.

The idea was to be a content aggregator for what I called "siloed content" (personal websites, blogs, etc). The ideas are outlined here if anyone's keen:

https://github.com/yakkomajuri/recess/blob/main/manifesto-is...

I'm happy for someone to take this over too even if they're interested. It's MIT-licensed.