If you want to say anything and not assiociate it with your name, then don't say it.
OK Mussolini.
We must be ready to face the consequences of our actions and of what we say.
Freedom is worth fighting for, but Batman wore a mask to protect those who relied on him. People have lost their jobs as a consequence of questioning the practices of a certain ethno-religious group, even in my country where freedom of speech is protected by law. Is it justifiable that a child should starve because his father mentioned an inconvenient truth, or questioned a historic even that one isn't allowed to question?
We must discuss even if we disagree. That's how we 're staying polite.
We can discuss and disagree whether I have another account on this forum or not.
If I create an account to say something controversial, chances are that I will be offensive without any consequences.
That's the point. Sometimes the mere truth is offensive. To know who's controlling the narrative you only need to learn who you're not allowed to criticize.