Though to be fair, there is currently an actual oil blockade run by the USA. And the previous embargo imposed sanctions on international entities dealing with Cuba, so it was not exactly 100% open even though technically you could sail there.
E.g. about 2 weeks ago Russian tanker arrived to port Matanzas, Cuba (again this is searchable data). It didn't fight it's way though American cordons, it just arrived. Embargo can hit a trader's wallet hard, but it's still not a blockade.
I'm not aware of the details, but i was under the impression that an actual blockade is going on? That's at least what many media are claiming, as summarized in this wikipedia page: https://en.wikipedia.org/wiki/2026_Cuban_crisis
Do you have any resources explaining how that russian tanker would not be an isolated case but a symptom of widespread incorrect reporting on the issue? Or is the truth somewhere in the middle, that the USA would let through a tanker or two just to keep the pressure high but not explosive?
Our Glorious Leader :: Their Wicked Despot
Our Great Religion :: Their Primitive Superstition
Our Noble Populace :: Their Backward Savages
Our Heroic Adventurers :: Their Brutish Invaders
Our Legal Embargo :: Their Illegal Blockade
Our Noble Boycott and Divestment :: Their Savage Blockade