> From an American's perspective, given how much Latin American migrant inflow we have, it'd be easy for us to say the same about Latin American cultures and not imagining how we could leave everything behind.

If you'd wish to make that claim then you'd be awfully wrong.

To start off, you'd be basing your personal opinion on what would most charitably be described as survivorship bias. I mean, try to think about it. The observable sample you're trying to generalize is a tiny subset of a whole population which is the output of a social process subjected to a long sequence of socioeconomical filters.

It would make as much sense as to claim that the average American is excellent at American football by using NFL teams as your sample of the US population.