The media needs to get off their 'fake news' false narrative

"Trying to define a “fake” story is a slippery a slope"

It is not. Some stories are fake beyond any doubt, have been conclusively disproved and still keep popping up. E.g. "Obama is a foreigner" and many others.

We need more critical debate of arguments, and maybe a crowdsorced repository for discussing, and reaching consesnus on such stories.

And websites like Facebook must take responsibility for the stories they spread and be prepared to submit them to quality checks.