To the contrary, this mentality is alive and well in America. HN's own yummyfajitas usually drops in on these kinds of threads with a lot of links proving that the poor deserve to be poor due to their own poor decision-making.
There must be a balance between the two.
Nature or nurture? Free market or regulation? Individualism or collectivism? Career or family? Fat or carbs?
The truth, or optimal choice, always seems to lie somewhere in the middle... some combination of the two. Yet, more often than not, we immediately devolve into partisan camps fighting for one side.
That sounds like the fallacy of the middle.
And remember that "middle" is relative. Your middle is someone else's far left.
Easy worldview to have if you consider yourself well-off.