Are these the same "opposition groups" the U.S. trained to conduct terrorist attacks in Cuba? I'm skeptical of what they might have to say, especially when we don't even have a name of the group or some sort of Cuban law we can point to.

When the U.S. designates a country a state enemy, you see all sorts of stuff made up about it, along with all sorts of muddled half-truths, exaggerations, and misleading spins. You just saw an example of this -- the half (at best) truth that Cuban elections are not contested. You can't take this sort of "Bad Country" mythos at face value.