Earlier quoted context omitted.
As Elon Musk put it, ~"Managers receive the greatest distillation of all the problems. They have the worst job" They are the ones expected to solve the hardest problems. If someone can't figure it out, it gets pushed up the chain.
Managers generally solve no problems. Not engineering ones anyway. They are responsible only for applying the proper resources to get problems solved.
It's become really common in engineering, particularly in orgs doing agile, to split resource and functional management. I don't care for that. I spent a long time as a product owner and wondered quite often why I couldn't just absorb the resource manager's responsibilities as well, since the only thing I wasn't doing was writing reviews. Every other problem rolled up to me, since I was accountable for the outcome.