The question is whether the project should be forked into multiple separate projects at all. An alternative would be to have a generic “Directory Platform” and have modules to make it a Book Review platform, a Movie Database, or whatever-you-wanna-collect platform with another module. The modules would mostly be templates and data structures + user interface widgets to present them nicely.
Yes, true. I asked the question in a more general sense on the fedi: https://mastodon.social/@humanetech/107540889998564900