Yeah. No. Like, I’m not a fan of the embargo, I don’t see any purpose to it.
That being said, it is patently idiotic to say that it’s illegal for the US to not want to trade with Cuba. Brazil can trade with whoever they want and embargo whoever they want. Same with the US. It’s called national sovereignty. If the US was interdicting shipping going to Cuba, or blocking air traffic, or whatever, then he might have a point, but that’s not happening.
US trade policy with Cuba might be unproductive and ill advised, but it is dishonest to say that it is an illegal policy. It’s never illegal to not trade with a certain country. Cuba doesn’t have a right under international law to sell their exports to American consumers.