Most of the time, whistleblowing is looked at from the point of view of professional ethics. The idea of freedom and the needs of professionals are seen as immoral by morality. But because people who speak the truth are often punished horribly, morality needs to leave a way out of blowing the whistle. This is why it creates rights (which are sometimes called duties) to take precedence over the duty to the public set by professional rules. Its not a matter of duty to blow the whistle, but this makes it look like it is while hiding the truth. Remember that blowing the whistle was either the right thing to do, which no one wants to do. People still judge it based on why the person who blew the whistle did. In a way, people who blow the whistle should try to be good. But it doesnt make sense to say that spies are heroes or saints and that they have to blow the whistle. Thats not what morals is all about. It makes the good deeds of a few people seem more important than the lives of many. But being consistent isnt a big part of being decent at work.