Yes, I see.
It could be argued that a lot of these jobs are going to those already fed drones, and the next batch of drones will be just as bad, so there’s no rush to replace them.
The mix of political and career ambassadors vary by administration. Usually, it is around two-thirds career. Trump is around 50%, which is why he is getting blowback from the bureacracy. There are less ambassadorships available for the career types. The employee union, AFSA, has been critical of Trump for this and other reasons.