Well, no, but don't pretend that there aren't people who do view it as black and white and exactly in the terms of Cuba = evil and Texas = good. Schlaufuchs is right to ask the question. But even by your own standards, you should probably question what it means to "flee" and indeed what it means to be allowed to flee. Are millions of incarcerated individuals "free" to leave America? For that matter, are certain millions "free" to leave America without having the "proper" documentation? What of people who have been human trafficked to America? You may be aware that America receives something on the order of 50,000-150,000 undocumented migrants every year. Of course even if trafficked these "lawbreakers" are not really free to move around in America, let alone leave on their own terms, first on account of being in chains and second on account of US law. There are at least 11 million people with this status in America.
And finally, as for Cuban law about fleeing and being stopped by the government - would you mind citing your evidence on this? Particularly, who was trying to flee, who was stopped, why, how, and with what international intrigue going on at the time? I believe that if you do so, we will have an opportunity to learn something about the Cuban revolution, and maybe even the condition of Cuba prior to the revolution. But if you do not, then you are unfortunately stubbornly abiding by old wisdom: old wisdom which instructs us to believe that Cuba is somehow "special" for having borders, regardless of the utter violence that Texas does on its border every f***ing day.