Eh...that's not a great take. LeBron is very intelligent within his profession. Namely the game of basketball.
I am very intelligent within the scope of my profession, which is auditing.
Difference being, LeBron was God blessed with insane physical attributes and talent to play a professional sport that pays its players ridiculous amounts of money, thus enabling him to become a billionaire.
My profession does not. If it did pay like LeBrons profession, I would be a billionaire too.
The point being, he didn't need to be smart to become a billionaire.