I feel somewhat compelled to step back in momentarily, since the whole reason this thread exists is because of me...
I think that clarity and constraint is crucial for debates/discussions/arguments etc., and maybe I can add a little bit. The more well defined a question, the quicker it usually is to come to some sort of understanding, mostly because of the reduction of variables to talk about.
I think that most reliable sources (NMSU CPI, thechileman.org) call this particular chile pepper the Caribbean Red Habanero, not to mention that most people on this board call it that by name as well.
That said, if we are talking about the origin of all habanero C. Chinenses, I think it is safe to say that the Yucatan Peninsula and Belize are the origin. The Caribbean Red Habanero may have been a cross between a true orange Habanero and another C. Chinense from the Caribbean, as Potawie has suggested, but who is to say unless someone can offer some evidence beyond theory and conjecture. The point being is that it is irrelevant the discussion in my eyes. The Caribbean Red Habanero is associated with the Yucatan Peninsula, and has been grown there long enough to have a distinct association with the area. The Yucatan Peninsula is part of the Caribbean, therefore the Caribbean Red Habanero is from the Caribbean. Just to be clear, the Yucatan Peninsula contains three states of Mexico, which are Yucatan, Campeche, and Quintana Roo. Literature that I have read never makes a distinction that it is only from the state of Yucatan, but the Yucatan Peninsula as a whole. It boils down to whether or not you agree that the Yucatan Peninsula is in the Caribbean, which I do.
If we take everything to its logical conclusion then all chile peppers originated from somewhere in in the heart of South America near Peru, Brazil, whatever....
One could say that the Bhut Jolokia originated not from India, but instead from the heart of South America, and he/she would technically be correct, but he/she would also be wrong if you believe that you have to recognize change and migration and climate and all that other stuff. Potawie referenced this earlier when he said that all humans originated from Africa, but I would not consider myself African. I am white and from the North America, The United States, North Carolina etc. I have no association with Africa. So we must recognize some sort of time frame where we can say, "Okay, (insert number here) years is long enough to stop referencing the ancestral origin."
I think the case of Caribbean Red Habanero qualifies. Some others clearly disagree. So it comes down to how technical and literal you want to get. I refer to only the Caribbean Red Habanero in this discussion, and nothing else. It is labeled by the NMSU CPI, among other sources, as a Caribbean Red Habanero, and if you think they know what they are talking about, it is not going out on a limb to say that it is indeed a C. Chinense that is red, is a Habanero, and is from the Caribbean (if you actually agree that the Yucatan Peninsula is part of the Caribbean).
I'm not sure how it can be broken down any further. I just hope they taste as good as I think they will considering all the effort I have put into this debate! Might just stick with my Bhut Jolokias from Peru...