I think the answer to the question snipped here, which rephrasing relies on something Wallace had said, is revealing:
Q. How crafted is that persona? Because it has the appearance of course of, like, nakedness, and an actual opening up of the thought process. But at the same[ ]time, you said, like with the David Lynch thing, you felt it sort of turning[ ]into shtick.
“Shtick” is a word that Wallace had used in referring to himself writing non-fiction:
[T]here was kind of a shtick emerging. And the shtick was somewhat neurotic, hyperconscious guy, like, showing you how weird this think is that not[ ]everybody thinks is weird.
It shouldn’t be troubling that there is a “shtick”, a “persona”–that’s inescapable in being a ‘person’ at all and is only intensified in the cases of performer and, perhaps more so, of celebrity. What might be intriguing even to a Wallace agnostic is that this “persona”, “DFW”, doesn’t mutate upon being outed – upon being referred to explicitly – but rather folds ‘beting stripped “naked”‘ into its performance — into its clothesure.
It figures some of you would identify with the guy interviewing David Foster Wallace. What a bunch of queers. That man talked mean to me! That man said I asked stupid questions! That man is very disrespectful! I don’t like that! No one is allowed to talk to me like that! My name is Johhny Fauntleroy! I’m the King of France! My question is: what are you wearing right now? Pinafores?