https://www.youtube.com/playlist?list=PLxQaod7tWvYK_Naia54Gc...
The question is, has he remained independent from his decidedly partial funder?
I see it's all video in that investigation, do the videos look like they've been manipulated?
A bit of a tangent but: this is how you keep secrets in the Information Age. You can't actually keep a secret, but you can fog up the air with so much competing nonsense that nobody knows what to believe and the secret is indistinguishable from noise.
Murders in Chicago the last 10 years:
2009 - 463
2010 - 456
2011 - 449
2012 - 514
2013 - 455
2014 - 464
2015 - 512
2016 - 808
2017 - 683
2018 - 588
The problem with that is that the person with the byline isn't the only one that matters. Editorial oversight is equally important. You need the guy who's enthusiastically digging into a story and the guy who keeps his enthusiasm in check. I don't think those can be the same person.
A young journalist named Relotius who worked for "Der Spiegel" was found to have his stories a little bit too perfect. He acknowledged that some parts of his stories were "beautified" by him to make them more appealing to the readers.
So, while the core of a story might still be true, nobody really knows what happened and what was added by him. Nobody believes anything of these stories anymore after all.
It totally blew his career up (he was formerly found to be one of the "rising stars" of German journalism and had already got some awards for his work) and the Spiegel also found himself under heavy criticism, although they already have a concept in place, where another editor always fact-checks the other editors work.
So: Enthusiasm in journalists can go really wrong.
I think you are underselling it. Quoting from Der Spiegel[1], "he included individuals in his stories who he had never met or spoken to, telling their stories or quoting them. (...) He also made up dialogue and quotes."
[1] http://m.spiegel.de/international/the-relotius-case-answers-...
[1] https://digiday.com/media/inside-spiegels-70-person-fact-che...
But, where I get worried is what happens to the public commons when the labor of large scale journalism which is out of the reach of a single journalist (or even a small confederation) resources wise gets lost. Would it be replaced by individuals or small federations that are as effective? I mean, I don't think effective journalism will die anytime soon on the whole. But, I wonder if pockets will go extinct, and I'm nervous about what that means. I still don't think I've really seen it all that much yet.