Just for reference, we still have white people and black people down here. As well as people not from Cuba but are not native Floridians (ex. Colombians, Haitians, Dominicans, Canadians, New Yorkians (lol). Not everyone is Cuban...
That's like Texas saying that they should split up b/c there are so many people of Mexican descent there. It's not a good enough reason.
What IS a good reason (not that I'd want this to happen b/c I can't live in a state without Disney) is that they take far more money from here then they give back. And that is simply not fair.