You seem to have neglected the influence we have as designers over the experience. Agreed, we don’t have full control, but we do have great influence. ‘UX influencer’ might not catch on but ‘UX designer’ is close enough.
Walking into an Apple Store it’s fair to say that they’ve successfully engineered and influenced the experience that the majority of shoppers will have. There will always be factors we have no control over in such scenarios but these shouldn’t present a barrier to designers. They just need to be considered in the solution.