I understand, but I think they don’t have the luxury of not having a DBA. Data is important; it’s arguably more important than code. Someone needs to own thinking about data, whether it is stored in a hierarchical, navigation-based database such as a filesystem, a key-value stored like S3 (which, sure, can emulate a filesystem), or in a relational database. Or, for that matter, in vendor systems such as Google Workspace email accounts or Office365 OneDrive.
Early on, depending on what you're building, you don't need a fully fleshed DBA and can get away with at least one person that knows DB fundamentals.
But if you only want to hire React developers (or swap for the framework of the week) then you'll likely end up with zero understanding of the DB. Down the line you have a mess with inconsistent or corrupted data that'll come back with a vengeance.
I understand, but I think they don’t have the luxury of not having a DBA. Data is important; it’s arguably more important than code. Someone needs to own thinking about data, whether it is stored in a hierarchical, navigation-based database such as a filesystem, a key-value stored like S3 (which, sure, can emulate a filesystem), or in a relational database. Or, for that matter, in vendor systems such as Google Workspace email accounts or Office365 OneDrive.