A professor is removed from his position for stating a fact.
Everybody (except for the most brainwashed) know that the professor spoke the truth. Even people who forced him to resign know it. What’s the purpose of faking outrage against him, then?
Well, the way it works is that everybody has to prove allegiance to the regime by loudly defending things they know to be untrue. You are of no use if you parrot the parts of the dogma you have sincerely accepted. No, you have to go against what you absolutely know to be true.
And you have to prove your complete loyalty by denouncing a friend or a relative over a belief you share. That’s the ultimate test.
Unless you can do that, you’ll get no peace. You’ll be pushed and goaded and forced to accept increasingly monstrous lies.