Shouldn’t be. Very few engineers want to move to BA/PM/PO or management track.
Engineers who understand those roles exist and should be given the reins. Call them whatever but an engineer with domain knowledge is what you need for just about everything.
We’ve had quite a bit of success moving to a product model for internal services. One thing I’ve observed though is that teams lacking strong PM/PO support tend to start looking inward to develop their roadmap rather than outward.
This ends up building little silos in which they are doing something and it’s generally executed well but when you explore their plans it can be hard to see how it connects to the larger view.