I don’t really care if he’s eligible. All I know is that he’s the son of Cubans who didn’t bother to apply for citizenship until after his birth even though they had years to do so. For all we know rubio also has Cuban citizenship.
So what if they didn’t bother to apply for citizenship immediately. That does not mean they did not love this country. Applying for citizenship is a tedious process, I know, I did it, it takes money and time to do it.