This is great!
Also see the native book format of nostr being developed by nostr:npub1l5sga6xg72phsz5422ykujprejwud075ggrr3z2hwyrfgr7eylqstegx9z and team.
My understanding of benefits of the latter over long form is that there is a nostr native system for referencing specific e.g. chapters, paragraphs.