Obviously, it's also a good advice to be born with wealth from the blood of an emerald empire. Hyper-rational, being born wealthy. Great advice!
Kidding aside. I'm just sick of people putting people like Elon up on a pedestal. Look at all the rich, successful people out there. How many come from wealth, and how many come from dirt poor conditions and just worked themself up? Working hard is good advice, but it doesn't guarantee success, quite the contrary. A lot of successful people never worked hard a single day in their life, and billions of people work hard their whole life and never come close to the kind of success the former enjoys.
Hell, I guarantee that Elon is not even the hardest worker at his companies, even though he enjoys most of the fruit of the labour.