I consider that a narrow view.

I'm a production DBA. I need to know how to troubleshoot production data at both the DB/OS interaction level and what is a bug in the SW. My last company used primarily delivered SW. I found a bug that the delivered SW failed on the INSERT statement but the UPDATE statement worked.

My current company is/was a SW producer. On the production end I still needed to know when the end-user failed versus a failed stored proc that I had to report as a bug.

But at the same time I've done development work. So I know that sometimes the DB should be flat, or whether to build it in.