Elon cannot change the laws of Physics, is not a serious person, and has no particular engineering skills. He is not authoritative on almost anything. He’s just cosplaying.

Consider this: people chose the far right to ban marijuana legalization, only to have the far right controlled by drug-addicted tech buddies. Choosing the left simply means non-drug-using politicians tolerating drug use by the homeless; choosing the far right, on the other hand, directly allows self-producing and self-consuming drug dealers and users (whether it's actual drugs or the "spiritual opium" of social media) to rule America. You might think the far right is the kind of people who want you to return to a comfortable rural life, but the real far right rulers are the ones who want to spread the Chinese Satanism and the Chinese model of cyberpunk dystopia—with its tens of millions of cameras that can turn on your smart device at any time to take nude photos—to the United States.

Elon is not a good person to ask on technical matters like this given both his history of saying really silly things about space-related technologies and his enormous incentive to lie to attract investors.