"If you are smarter, you achieve your target faster than the others. A lot faster. That makes the real difference. I am not that smart but I can identify a smart guy instantly. Most people don't have that talent. :p"
Sorry this just isn't true. A lot of dumb people get rich from luck and I know a lot of very intelligent people that are unable to achieve great wealth.
Dumb people might get rich that's true. Staying rich is also not an easy task. You still need to be clever to stay rich. There will be smarter people around those rich&dumb people and in a matter of years they'll lose their shit and go back to where they were.
Many smart people don't get rich and that's true too. I didn't say all the smart people get super rich. I said they usually reach their goals. That's not always about being super rich. Many people ask nothing more than a wife&kids and a house and they
usually get it. Yeah some poor fucks don't get what they want but who gives a fuck.
In statistics you ignore the extreme samples to have a meaningful result. That's why I said usually.