Moore's a Bullshite Artist. He would choose US healthcare over Cuba healthcare every time. If his life depended on it, who do you think he would choose to save it?
Frankly given who Moore is- he might just choose Cuba.
I wouldn't.
Not because Cuba is a communist country- but because it is still a third world country- just a third world country with better than average healthcare.
That said- thousands and thousands of Americans go to Mexico every year for health treatment because it is cheaper there. If they could go to Cuba for even less, they would likely do that. Cuba's healthcare system is at least as good as Mexicos.