Raibmon and authenticity

Does Raibmon ever define authenticity or is it just talked about. Raibmon talks about authenticity as something created by the colonizer but I'm left wondering if there is such a concept as authenticity. Knowing that cultures change over time can something be authentic. Then again, I don't know if Raibmon needs to define authenticity. The three examples used center around how the idea of authenticity causes certain outcomes and is used by both the natives and whites for their own gain, but are any of these examples something that is truly authentic. I continue to have no idea.