Oh my sweet summer children. Feels like the author has perhaps never worked on a complex, big product or with any capable engineering management.

The worst and biggest messes in software engineering that I've seen have been situations where there was not enough engineering management. And those situations were fixed by... introducing proper engineering (and product!) management.

That being said, it is perhaps possible to survive with less engineering management in a situation where everyone is behaving and performing at senior or above level. However, realistically, that is very rarely the case.