That's a bit of a stretch, don't you think? Bonded laborers were forbidden to leave their jobs under penalty of the law (like actual prison time). H-1B holders are free to leave any time, they just experience a massive drop in income.
Social Darwinism is entirely based on misunderstandings of science and history. It is a dead-end philosophy, and needs to be eradicated with knowledge, replaced by the spreading of compassion and cooperation wherever it is found.
Also I would love some papers on how natural selection is no longer valid, this sounds like pure opinion.
Are you already tired of "helping" others? Don't forget that we aren't trying to cooperate for a very long time as it may seem to be. We aren't still great at doing it either.
What may seem to be broken to you isn't wrong in essence. We should help each other. We should support each other. And less poverty is better for all of us. Maybe we should just do it differently. Perhaps the way we are doing it isn't good and we should find a better way to do it.
In addition, this line of reasoning totally discounts the very real benefit of foreign transfer payments from workers in the United States to their international families, often supporting large extended families.
Thus, if they go home, they will not likely be "lifting their country out of poverty"—they will just be stuck in one of the jobs that is available there. Low-skill, low-pay jobs, without any prospect for advancing to something more like they would be able to do here.
I don't know to what extent this is true, but this is my understanding of their post.
(The counterpoint to this, which the GP didn't talk about, is that this person is still likely to be able to retrain and be productive in that society in other ways.)
The end result looks similar but motivation matters.