I grew up lower middle class - not poor - took on a healthy amount of debt to get a CS degree from a crappy college in West Virginia.
Most of my classmates are doing quite well, and I'm working at Google - with a fellow classmate, literally in the 1% now (both of us, out of a class of only 8).
I know plenty of rich kids who went to Stanford and studied philosophy or underwater basket weaving, and they're killing it.
But that doesn't mean poor people have no opportunity. Sure, it's not equal. But it's far from hopeless.
I think there's a lot of people who look at the world and see how unfair it is and think: why even try?
The world is not fair, never has been, never will be even close to it. You just have to accept where you started from and try your best. And we can try to push for a fairer world, but don't hold your breath. If anything, inequality is skyrocketing and the world is becoming less fair.