nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft Highlighter enables a social layer over content; is it also targeting the personal productivity process?

Asking because I use tools like Obsidian and Logseq for my own notes that are 100% offline and private and Nostr does not seem like a good fit from a privacy standpoint (unless local relay?)