The authentic human escapes this, for s/he does not care one jot what the "plenty" think, feel or do. Not out of callousness, indifference or individual narcissism/solipsism, or even because authenticity exists despite and outside of that frame - but that it flourishes through and in it.
Sartre put is as; "One always has a choice". It's an existential truth that even if you are on your knees in front of a ditch, with a gun to your head and the choice "comply and live, or die on principle", you can always choose to die. That's the essence of choice, not a mere toss up between two picnics.
And once that threshold of understanding is passed -- that _choice_ is the one thing that cannot be taken from you -- it is possible to see further into Kierkegaard's "Fear and Trembling" and "Sickness Unto Death", in which that choice allows one to become not merely a gadfly but "an error, stubbornly and indelibly written into the text of consensual reality... one that refuses to be erased". The harder the system scratches at it the more the itch spreads.
Obviously there's a lot of Christianity at the base of this, and returning to the GP, P. K. Dick is clearly immersed in that. Maybe that says Christianity is still a relevant religion in the technological age? I also find it bizarre that Nietzsche, who saw Christianity as mere bloody-minded resentment, still arrived at the same basic idea of all-too-human authenticity. So it goes deep.