Musk's intention, regardless of what he said after the event, was to use the nazi salute because, if it weren't, that gesture, made twice, would make no sense. I don't know if he did it because he is a nazi or if it was just a performance for a part of the audience or simply to show everyone that he can do whatever he wants, that he is untouchable. But there is no doubt in my mind -- it was a nazi salute, done intentionally.