Though I do want to clarify
> The systemization of everything (through what you call "radical self-expression") is creating a bunch of pseudo-intellectual naval gazing
That's not my term, it's a burner term, and has nothing to do with systematization. The Ten Principles are a set of descriptive (not proscriptive) observations about what makes a Burn different from other festival-like gatherings [0].
> fundamentally a simple topic. Authentic people are honest people. You can often tell right away who is lying and who is not. The computer in your head has hundreds of thousands of years of evolution to help you with that.
This is probably the neurospicy rearing it's head. I understand what you mean about "fundamentally a simple topic". But in a lot of ways, it's not simple. To a first order approximation, yes "honesty about who you are" is tantamount to authenticity. Because for most folks, "who you are" is a fairly fixed concept, so being honest (or dishonest) about it is straightforward. But I don't think having a fixed concept of self is a universal experience. For me, (when I'm at my full potential) I'm able to select and deselect attributes of myself to express.
Tl;dr - "masking" making defining "authenticity" challenging for neurodivergent folks.