They unironically believe that the government has no power to enforce laws against real living breathing people and that they can only enforce laws against legal fictions. All they have to do is ensure their real person is always kept separate from their legal fiction and they don't need to follow laws.

To them, acknowledging your name (sometimes only your name in ALL CAPS) is the same as combining your real person with the legal fiction and must be avoided at all costs. In courts, they will only ever say they are representing a legal entity and will never acknowledge they are representing themselves as that is the same as combining the real with the fiction.

None of this works because the base premise that the government can't enforce laws against living breathing people is untrue.