It is "self-authenticating": It rejects any Truth at all that is not sui generis. Holders of this view refuse in principle to be judged, either by God or man.
This seems not what the great pre-Socratic philosopher Heraclitus had in mind in his description of a "public man."
Basically, Heraclitus' "public man" was a man well aware of the fact that "the Logos is one and common" for all men — Logos meaning the Truth of Reality, Alpha to Omega. Man does not determine the conditions of Reality. Rather, he is a part and participant of/in it.
If I get Heraclitus right, it would appear that our contemporary self-exiles unto Second Realities qualify for the other basic Heraclitean category of humanity, the private man. Heraclitus compares such to dreamers, to men "turning aside into their own private worlds." Such men reject in principle the idea: The Logos is "one and common," from which ultimate criterion flows every good principle for the truthful order of Nature, of human souls and thus, of human societies. [I just designate such folks as "lotus eaters"....]
Seems to me Heraclitus was a pretty good psychologist.... He seems to have anticipated (by about 2,000 years) our modern-day Existentialists' elaboration of the psychological principles of existential angst and self alienation....
Heraclitus just called them "dreamers" — i.e., men out of touch with Reality.
Well, enuf for now, dearest sister in Christ. It is such a blessing to have you to speak with about these matters. Thank you ever so much for writing!