Погуглил, как-то мнения расходятся.
Вот пишет его биограф (насколько это правда хз🤷🏻♂️)
His biographer, Ashlee Vance, describes the way Elon communicates:
“On initial encounter, Musk can come off as shy and borderline awkward. His South African accent remains present but fading, and the charm of it is not enough to offset the halting nature of Musk’s speech pattern.
Like many an engineer or physicist, Musk will pause while fishing around for exact phrasing, and he’ll often go rumbling down an esoteric, scientific rabbit hole without providing any helping hands or simplified explanations along the way.
Манера речи типа такая, южноафриканская и инженерный склад ума плюсом.