It's psuedo-legal bullshit. Sovreign citizen movement has been around for at least 20 years. The idea is that your individual personhood is seperate from the government entity registered upon birth. They claim that by re-asserting your 'sovreign personhood' you seperate the two 'yous'.

There is no legal avenue to pursure this, as it isn't a real mechanism of the law. The believers of this movement use that as evidence that they are being supressed or that TPTB are afraid of this super secret trick. But in reality they have perverted the legal system into their own version and are upset that the rest of society doesn't recognize it.