What parent is saying is that if you have a high income level, it's not the end of the world to pay cash for everything, so you can live with a bad credit score

What parent is saying is that if you have a high income level, it's not the end of the world to pay cash for everything, so you can live with a bad credit score. You might have to buy a beater while you save for a nice car, but if your income is low the equivalent option is taking the bus.