In the end, they need a scolding that will perhaps shame them into remembering they have a backbone. But I suggest that imprecision with the scold will reduce the efficacy of this bitter medicine, and the poster will focus on the minor inaccuracy of your analysis compare it with their own pure intent, dismissing the scold as bad faith. If instead you note that it is cowardice, and add a spoonful of pity to the scold, and remove the minor inaccuracy, it may have a greater effect.