If you really want a "what food is advertised as isn't what it really is" story search youtube for Vegan Marshmallows. (short: some guy was supplying a 'vegan' gelatin substitute to several groups (not just vegans) and when it was tested it had animal products in it and the guy 'disappeared').

Revealing that some companies/restaurants aren't always truthful isn't a new thing. Certainly not only a year old. It's really as old as investigative journalism in general. Dating all the way back to "The Jungle".

Edit: and what you're really saying is that 'mainstream media' just copied the idea too. And from a grassroots-level at that.