For that matter, news media in general has become biased, unsourced and full of rumor and gossip masquerading as news. That includes Fox as well. But Fox publishes numerous adorning stories about Trump -- which is why Trump won't go after them.
This is how Trump and his supporters define "fake news." If the story is unfavorable to Trump, it must be fake. If the story idolizes Trump, it's real. It doesn't occur to ardent Trump fans that those glowing stories about their idol might be fake too.
It is interesting. One example they cite often is WaPo's report that Comey was about to be fired. On several threads some have called this out as a perfect example of how WaPo 'makes up stories', yet on a recent thread where that came up, I pointed out that Breitbart and Fox both ran with the same story at the same time.
Yes, it could be totally fake for fake's sake.
It could be they were fed misinformation.
It could be they were honestly wrong.
Or it could be that the story was true when they received it and because it was reported, the dynamic changed and the decision makers pivoted.
Blindly yelling fake is useless if you don't know 'why' it is wrong.