I haven't read the whole article because skimming it and seeing crypto or blockchain as solutions triggered a close tab reflex for me.

But your comment about nostr features around RSS notes is interesting, and I would generalize it to nostr features or conversations around URLs. 

NIP-84 (Highlights) sort of does this but it has the emphasis more on a partial blurb that someone finds interesting.

I'd like to see something where the article or URL is the "root", and then your client would show something like "Petri & 2 others have started a conversation around this article".