I disagree I guess. Multiple companies I’ve worked at have broken up their shared db into many dbs that individual teams own the operations of, and it works just fine. At significant scale in traffic and # of eng. No central dbas needed - smaller databases require much less skills to manage. The teams that own them learn enough.
Full Stack is a lie, and the sooner companies accept that and allow people to specialize again, and to pay for the extra headcount, the better off everyone will be.