Malignant narcissism on full display. It doesn’t matter how politely, respectfully or obsequiously you tell the malignant narcissist that they’re wrong about something and/or that they should change something about their behaviour. You’ll still touch off their narcissistic rage and they’ll lash out at you in response.
Especially when you’re someone like Elon and in your personal day-to-day life, you’ve been safely cocooned for many years in an environment where everyone constantly sucks up to you, flatters you and tells you how brilliant all of your ideas are.