Being "authentic" is a very tenuous definitional frame that can be broken by nearly. [definitional]
To Walker, "authenticity" is not so much about revealing deeply personal information as it is about consistency: "Tristan equals Tristan no matter where you go." He imagines readers judging his authenticity across times and mediums, and coming up with a reliable uniformity of self-presentation. Being "authentic" is a very tenuous definitional frame that can be broken by nearly anything, even something inconsequential.
Alice E. Marwick, Status Update, loc. 284