While I find it impossible the deny that "fake news" is the phrase of the year (though not the "word of the year," as per Joan's post), the problem is that the phrase has been so overused that it's utterly meaningless. In fact, it has become a complete crutch.
Consider:
* Want to discredit your opponent's argument? Simply label it "fake news," and you've no need to provide facts yourself, or even bother to discredit or disprove the argument.
* The application of the term "fake news" is, in most instances, an opinion, and not a fact. Of course, these days, one can find some web site or other (usually a partisan site) that will "back up" your claim, but neither an opinion nor a claim on "some web site" are either news or facts.
* Similarly, the "news" being deemed "fake" is often not news at all, but an opinion.
* The Left and the Right, liberals and Conservatives, Democrats and Republicans, are all equally guilty of both promoting "fake news" and slapping the label "fake news" on news or opinions they disagree with.
* Many times, the promotion or propagation of "fake news" is done without deliberate ill intention. To point out the obvious, it seems people -- including intelligent and educated people -- will believe anything they read online, and they'll "like," comment upon, forward, reblog, retweet, etc. instantly, without pausing for a second to consider the veracity of that they're "liking," forwarding, etc.