Wikipedia has editors, varying levels of admin permissions, different types of pages, templates, comments, edits, etc. I'm not sure their data model is any less

Wikipedia has editors, varying levels of admin permissions, different types of pages, templates, comments, edits, etc. I'm not sure their data model is any less complicated than Airbnb. But regardless of the complexity of the database schema, neither one of them is really an "feature rich application" in the way that that say, Photoshop, is a feature rich application. At the end of the day, I think they're both just CRUD apps.