This may well be the worst reporting, worst headline, worst understanding of the issue at hand I've seen in years. It's like a 3D scan of fallacies!
I haven't a clue on the actual research, but I will assume that the reporter has completely lost the plot and may need to have his or her brain scanned for signs of life.
Body dysmorphia is not anorexia. Anorexia is not a failure to see one's body accurately. Anorexia isn't a diet in search of different appearance. Showing someone their body in all dimensions isn't a treatment (though it might be a tool in treatment and why do those silly chalk outlines when you can spend $£€$ on fancy equipment.
And honestly, the image of tackling someone with anorexia...