That’s a common counter argument. But if you listen enough then you understand that he (correctly) identifies that personal finance is more psychology than math

That’s a common counter argument. But if you listen enough then you understand that he (correctly) identifies that personal finance is more psychology than math. And the aggressive debt repayment he advocates makes the accrued interest trivial. People who follow his plan pay tens of thousands of dollars in debt off in 1-2 years on modest incomes.