I think it is important to differentiate between news reporting and commentary.
Fox news is not any worse or better than the other news reporting. There is a difference in the priority of stories but that makes fox news a good alternative news source, just like MSNBC.
The commentary on Fox news/MSNBC is a different story. A commentary is just like an OP-Ed feature of a newspaper... it is just one person opinion and their opinion was chosen by the media because it appeals (entertains?) its customers.
I really have a hard time believing that anyone with a brain in their heads truly turns to the commentary on Fox News/MSNBC as an unbiased and complete source of news. It is an opinion. It is someone's interpretation of the news. It is entertainment pure and simple.
So when people (the White House?) are slamming the media, I think it is important to differentiate between the news portions and the commentaries.
I will get my news from different sources, but I don't waste my time on the commentaries. I can make my own inferences thank you media.