The US is a big place with many responsible, caring people in it, so it can’t be characterized all in one stroke. But when this goes wrong, it goes really wrong.
Many are actually allergic to the idea that they are even supposed to care about others. “I’m not my brother’s keeper” is a prominent attitude here.
They see this as an impingement upon their freedom. Like having a deadbeat relative you’re stuck taking care of for the rest of your life. That kind of burden.
They have some notion of family and community but it’s very local, and I mean just the people in their lives. Anything beyond that turns into 1984 for them. Not agreeing with them, mind you, just describing.