This is a good summation because it makes it appear that the person holding cash is the one who is worst off (the bum w/ the cup) while the more debt you are in the better off you are.
If there wasn't such rampant debt in our society (multiple unsecured loans, 30+ yr mortgages, etc) then the average yearly income would be probably $50,000 to $60,000 instead of $30,000.