I thought about how to reply to this, but database roles vary so differently from company to company, it's a bit of a rabbit hole to go down. Whether you call what I described being a DBA or not, I don't think it's reasonable that a software developer would now "own" the database and all that entails. It just so happens that the database fits nicely into being "owned" and managed in AWS. And it also may neatly obviate the need for the DBA role. Although, I think that's debatable too.