It's better for structured and longer content. Blogs have better formatting, human readable permanent urls and you can share the publications anywhere. Doesn't really matter if that person is on nostr or not. It's like Medium, just better. Nostr is like "digital media in a box" to me. We have notes like twitter, blogs like Medium or Hive, streaming like Twitch and probably soon VOD as well managed in some kinky way too.