To be honest, they're probably 80/20. 80% of them are trying to do the right thing, while the 20% who are unreasonable zealots make the entire agency look bad.
And those 20% are the ones in charge.
No matter how many are trying to do the right thing, a single unreasonable zealot at the top establishes the direction for the entire agency - and the one at the top is a political appointee.