Journalists are always going to be wrong some of the time and several factors have been ramping that error rate way up but this has been discussed at length for at least a decade now. But, for the most part, legitimate news sites at least try to vie for truth as one of the competing demands on the business.
What's genuinely new is sites whose entire business model is predicated on intentional dissemination of knowingly false stories as a major part of the media landscape. Alex Jones style journalism has always existed at the fringes of the media landscape but now are becoming the main news source of a significant proportion of the country and that's worrying.
Trying to label other things as "fake news" muddies the waters and distracts from the issue.