People with big egos often produce amazing and innovative things and accomplish incredible goals that people with normal sized egos have no drive for nor does the normal or average person have the confidence and deep urge to fulfill their outsized 'destiny' or vision.
I think Musk is Musk--the good, the bad, the ugly, and the amazing. Most brilliant people close up are a hand full in someway. Ask his ex wives. ;D lol.
Add to that:
You can always recognize a pioneer by the arrows in his back.