The funny thing about all the "project fear" statements is that people use it almost like being told something is bad makes the statement wrong in itself. "Bad effects of brexit? Project fear! Climate change? Project fear! Smoking causes cancer? Project fear! Not wearing a seat belt increases risk in road accidents? Project fear!" It's like invoking Hitler - "stop the argument, this is the trump card."
Oh, and another funny thing ... picking isolated statistics as a supposed refutation of project fear ... "Look at our employment rate! Project fear is wrong about Brexit. Look at the nice weather in Wales! Project fear is wrong about climate change. My uncle smoked for eighty years and didn't get cancer! Project fear is wrong about smoking. I know someone who knows someone who in an accident was thrown clear of a car and walked away without a scratch, when the car exploded and killed everyone else! Project fear is wrong about seatbelts."
Basically, I am sceptical that anybody who says "project fear" about anything is capable of serious critical thought. It's an anti-argument. But then since "An argument that feels right to me and fits what I want to believe must be as true for me as your argument is true for you", I guess that's what we should expect in a postmodern era.