I get the point of the article, to bash electric car charging facilities and doing it in a Tesla where he wasn't really stuck but to the uninformed public they may not know about the Tesla and its network.
Its quite clear when he put no charging in Edinburgh when there are 2 chargers at the airport that this article was poorly written, I'd be surprised if he actually went out of the parking lot with the Tesla because putting Edinburgh into the Navigation system would have given him a much easier route to the one he took.