Everything about database v. files is subjective like that. Filesystem is a database, just with more established tradition around schema and use patterns, and system level APIs.
On the other hand, you get to implement concurrent access yourself. Multiple apps working on the same files simultaneously only works when none of them makes a mistake with caching or locking.
On the other hand, you get to implement concurrent access yourself. Multiple apps working on the same files simultaneously only works when none of them makes a mistake with caching or locking.