The implications of critical ignoring replace the foundational need for critical thought. The basis for your argument is fully set on anonymity. If the governments of the world provided nation-based social media structures where real people, confirmed as vested citizens, go to communicate, you would see a dramatic drop in "misinformation".
As it is now, misinformation helps the various intelligence agencies and media outlets sell eyeballs or distort truth. The idea we should take a "shunning" like approach to communication is draconian and misplaced.