A bit too "n = 1" there. What do the statistics of Afghan immigrants in your country in general show? Do they support your overall argument?
But, I believe it’s important to make immigration a little hard. Why? because it acts as a filter, that ensures that more capable immigrants are more likely to make it through.
I say this, because correlation is not causation. The people who are able to emigrate are more likely to be successful immigrants. So please be a little careful with confirmation bias. I tend to agree that moving out of a bad situation is a very good idea. I also know sometimes a bad situation is something you have to deal with. Some people really do have obligations that keep them tied to a location, often in the form of family (and I say this as a believer in dropping toxic family members).
> this is not their fault for simply being born in an area
I never said it was their fault for where they were born. But once they are legal adults, they can move.
> especially to a higher cost of living area
Seattle being a high cost of living has completely failed at preventing thousands of homeless people from arriving.
> or means to move elsewhere
They had zero means to move here other than their feet. They can move elsewhere.
> or that it is systemically hard for an immigrant to rise out of poverty in America?
If people constantly tell them they cannot, quite a few will believe it. Have you ever done anything that everyone told you you could not do?