In Southern Europe, talent leaves for better job opportunities and higher salary. In Cuba, people are literally fleeing to achieve basic human rights and 21st century quality of life.
I'm not sure if you've been to Cuba before, but having visited in the late 2010s, it's a caricature of life in a communist dictatorship.
Internet wasn't allowed, except for in certain public parks at certain times of the day, only on phones with certain websites, and with dial-up speeds.
The sum total of fresh food in grocery stores was 1 type of government ham, 1 type of government cheese, eggs, a few fruits, and that was basically it.
I could go on. It's a beautiful island country, but please don't fall for the silly idea that US sanctions or european-style "brain drain" have anything to do with the reason Cubans are leaving.
Authoritarian communist dictatorships are no joke.