The topic is about Latin America in general. Cuba is a very small and extreme outlier for several reasons so not very representative, I would say. It's certainly true that communist regimes from Cambodia to North Korea to Cuba have often been horrible for their people, whatever the root causes might be.

No, I'm talking about Latin America in general though. And yes it is certainly true there was colonialism, destabilization, economic coercion, and all that from large powers. I don't deny that. The examples I gave fit exactly the same description though. There was no "vast ocean" between the Ottoman Empire and Europe where it was throwing its weight around for centuries. Nor was there a vast (or any) ocean between China and colonial European powers, or later Japan.

So if "vast oceans" are part of your thesis, you are going to have to explain and define that far better, with a lot more supporting evidence and reason for your claims.

You can vaguely handwave and pontificate about differences between other examples and just assert without any real evidence or reasoning that must have been the cause of it. But like I said, that's just not scientific or even compelling in the slightest, really.