You can cry however much you want to, but the opportunity is out there.
There are numbers on this and they don't back up your argument at all. The US has some of worst economic mobility of developed countries [1]. Its almost as bad as the UK which has an archaic class system. You're perpetuating a myth.
Also, this idea that people are "crying" about it is a myth. People are angry.
[1] https://en.wikipedia.org/wiki/Socioeconomic_mobility_in_the_...