The head of Kuiper and most of the senior team led Starlink until Musk allegedly fired them for moving too slow and being too cautious. So Amazon being operationally behind isn't exactly surprising.

>Musk had fired at least seven members of the program's senior management team at the Redmond, Washington, office, the culmination of disagreements over the pace at which the team was developing and testing its Starlink satellites, according to the two SpaceX employees with direct knowledge of the situation.

https://www.businessinsider.com/r-musk-shakes-up-spacex-in-r...