This is silly. OP was just saying that people should live within their means and he gives a good framework for that.
For the more sophisticated people, you can ignore the mortgage advice.
For those confident they'll never carry a balance they can ignore the credit card advice. (one of the most responsible people I know had one bad month that ended up being a 60k credit card debt).
For those who sell insurance, they can tell everyone to ignore the life insurance advice.
For those who think he's a conman, don't have a beer with him.
But the hashkafa and attitude toward money in general is very sound, and the mehalech helps a lot of people to can't get themselves out of debt.