IF one’s doing something, like getting onstage & doing a presentation, is something one has no experience with..

THEN “fake it ‘till you make it” is absolutely-valid advice: you can’t gain experience doing presentations, without doing presentations!

Inherently-inauthentic people, however, are inherently-inauthentic people.

That is a different category.

People have to LEARN how to do, how to be, & that requires stepping outside of what one already-has-done.

How could it possibly be otherwise?