You havent a clue. I worked in the Federal bureacracy for two years with the Office of Legislative Affairs. I have seen (with my own eyes) the way SES level appointees are and have been appointed. Of course, I was serving in the military at the time.
So you see, I do know what Im talking about. So pound salt.
Not to jump on, but I have 8 yrs of direct experience with staff inside the DOL - there is nothing in Nimitz's analysis that I would disagree with. Sorry.
SES employees are a tiny proportion of the fedgov. Abuses like this an even tinier proportion. The fed force is generally better educated than the civilian which is one reason Congress keeps legislating catch up pay. Of course, the Executive never implements it but the point is made.