I did look at the group when I decided to give groups another shot, but it seems to me like the bulk of the activity isn't done in a narrative fashion, it's done in a way that is more social media-y (as in short replies that seem more like texts), because what I saw as the "thread" group didn't have a lot of recent activity and none of those threads were complete. Or particularly active.
It's entirely possible that the more robust narratives are behind a friends lock or something and I just wasn't able to see them. But as someone who loves to write scenes and wants to write complete scenes, I was weary. If you are a member and could provide a more informed opinion, I'd certainly be happy to listen and potentially reconsider.