my point isn't about denying interview anxiety existence (i suffer from it myself), and it has solid science foundation - speed of dopamine removal once your system is flushed with it. Some people have it faster, some slower. The former ones are great performers in acute short-term stress, while the latter ones are better at long/deep concentration on a task.
My point is about interview situation being preview to a lot [not all, yet a lot and many of them will be key ones] of future situations.