Its because I do not trust social structures and government that I think anonymity needs to go away.
In a truly de-anonymized system if you are a malevolent actor (gov't or individual) anywhere your actions are broadcasted to the world and people or governments can respond before too much damage is done, no one cares what the benevolent actor is doing.
In a fully anonymous system a malevolent actor can run wild and no one will be able to stop him. The same is true for a benevolent actor, but in a de-anonymized system no one is trying to stop him anyway.
The whole thing though does depend on whether you think the world at large is made up in majority of benevolent people willing and wanting to help their fellow man or malevolent people wishing to do damage in the world.
I think the majority is benevolent which is why I'm for de-anonymizing structures.