Why don't Americans like to show off their wealth?

Because it is different from our ideology, the definition of success here is mostly to earn a lot of money to become a master, while the definition of success in the United States is to achieve something in a certain field, so they are well-developed in science and technology, and there are many Nobel scientists, but making money does not completely mean success, so they do not show off their wealth, and the poor and the rich enjoy exactly the same civil rights, the poor will be respected, the rich will have some accidents in material enjoyment, while others have no privileges.