It's not that right and wrong doesn't exist there - but, as soon as there is a "wrong" people generally go into political spin trying to make it look not so bad. And there are a lot of reasons that people want to downplay the wrong - Congressional hearings, the Washington Post, new Congressional oversite. It's a complex psychology. It's like the great lengths people will go to, to make the numbers look good. If they start to show a downward trend, when there should be an uptick, the first thought is "how can we change the way we calculate it, to make it look better?" And how will we justify the change in calculations. And then there are "get well" plans, when they get off the rails, then there is a get well plan for the get well plan.
It's a deeply embedded psychology. No one wants anything bad to happen on their watch. And even if someone stood up and said "I'll take accountablility", those around them will ensure that they don't get that chance. There are no problems, there are no mistakes, there are only challenges. In 32 years, I never saw it change and it is endemic in the thinking. But it's not that people don't know right and wrong.
You think it should change and it should, but one person alone can't do it. Not even the President.