Debate the usage of a CalDAV-server as a storage backend

I wanted to implement database storage (e.g. SQLite), but it felt cumbersome and also a bit out of line for simplicity reasons. These days, I'm using mostly Nextcloud Calendars to track my time. And it feels like the right abstraction to use CalDAV for storing event data and easily being able to share these for projects (a calendar per project). It's also easily queryable by other tools. 