Journalists do that all the time, it's literally part of the job. Though it is rare to see because there are repercussions.
There was some golden age that is always a generation ago where journalists did great things, but, they weren't journalists, they were whistleblowers that happened to work for the media.
If you work for the corporate media then this 'golden age' journalism is just not possible. You would be sacked if you wrote the truth or went further than the press releases on the newswire for content.