You have to purge the people that are actually mission-oriented because they are not sufficiently subservient. Also, the voting base seems to hate the fact that federal workers tend to enjoy a lot more stability in their job than private sector workers do.
What boggles my mind is that the feds were made into political enemies so quickly and the public had zero empathy for the callous method that they were fired in. Meanwhile, in Dec 2024, you didn't see the level of bile aimed at the feds like you see it today. And worse, very few people seem to realize that they've been politically hoodwinked. They'll simply retcon their belief that they've always disliked the feds that much, and their guy is finally giving them their just rewards.