Earlier quoted context omitted.
That’s not fundamentally wrong , but you are missing the degree of change. Shit has gotten so bad, so fast, relative to what it was before.
I'm not missing anything. I was very clearly implying one specific point that Cuba has never been a "mostly developed country" and has been impoverished ever since Castro and the communists took over.
After that, vast majority were slaves, brought continuously by force, because they kept dying and dying and even with insane birth rate of the era there was no chance to ever sustain their population without continuous imports. And there was no way to make agriculture profitable without this horrible exploitation.
After slavery, population was... whoever didn't have balls to step on a raft and sail to Florida. This country is simply not made for living. Centuries of continuous negative selection because of massive one-way emigration and no immigration at all, took a genetic toll, too.
It doesn't exonerate Castro or Commies in general, of course they built a social model that beats even North Korea in dysfunction (North Korea at least made nukes), but just for a fact, Cuba is a useless place to live and if it was free and democratic, it would be very, very sparsely populated with people living there only for specific purposes of exploiting natural resources/shipping/fishing, but not permanent argicultural let alone industrial settlement.