This would be a double loss. First, they would lose their friend, hate, and their very simple, very clear, very black and white world will dissolve into a million unfamiliar colors. Second, they will lose their self image as righteous, as superhuman fighters for all that is good in this world. They will fall into the profoundly de-energizing state of having to admit they are like everyone else, that they make mistakes, that they use their weaknesses to spur them into emotional crusades that distract them without healing or even strengthening them. They will be forced to admit they are JUST LIKE US.
And they are, of course. They are just much more fucked up, much angrier, and much farther into self delusion than most people are willing to go absent gross individual psychopathology. Social psychopathology can manifest in many people, and remain relatively hidden. That is what we have today, and it is fed, of course, by many individual psychopaths, and the magical boxes in all homes.