I mean, anyone who has ever edited wikipedia can tell you. If you restrict your sources to ABC, CBS, CNN, NYT and friends, your article is going to read like a mainstream media story. And as the media gets more and more hysterical that starts to reflect on the quality of their articles.
Okay okay. If you want to know how wikipedia feels about different news sources, they have a very nice article about it. It's even color coded. Green is considered reliable. Red is considered unreliable.
So for instance, Wikipedia is seriously lacking in its cryptocurrency articles because you can't use coindesk or coin telegraph, even though they provide better coverage than CNBC and Bloomberg.
Citation needed.