Nobody is arguing that it won’t be harder for someone born into that situation than someone born into a wealthy family. Not one person. You said it was impossible to get out of a situation like you mentioned. It’s not. It just takes more hard work than most are willing to do. BUT, if they work hard (and smart) enough, they can get themselves and their families out of that bad situation.
And I feel bad for the kids born into those situations. Their parents likely made bad decisions that landed them in those areas or didn’t do much to get themselves out. So again, not impossible. Just have to work for it.