B. You only hear about what they do when they stuff up. You don't hear about what they've done well.
C. The public service is chronically underfunded. The IRS is still using computers from the 1980s.
D. Playing political football with national security issues favours the Republicans. They can tear down in months what it takes years to build. That's why pre-Trump these kinds of decisions were carefully made on a bipartisan basis.
E. Again, if you are relying on the career public service to defy illegal direct orders the game is already 99% of the way lost. They are the very last line of defence. They held in Trump's first term but many are exhausted and have a target on their backs now.
The public service is there to do what the public wants as represented by the people that public elects. The intelligence community gathers information, politicians decide what to do about. The justice department builds cases, political appointees decide whether to prosecute them or not.
If you don't like the decision being made, elect better people to make those decisions. It's not the job of the public service to act against instructions on the basis of their own core beliefs. They were not elected. They can bring continuity, experience, perspective, etc. to issues. They can't act as a government in their own right when elected officials go crazy.