If we're going by anecdotes, let's add mine: I've lived in 4 continents, about 15 countries, I speak 6 languages, I hold a few citizenships, I consider myself fairly cultured and not only I've never eaten a Jamaican meat patty but I've also never seen one for sale.
In fact the only way I know about their existence is through watching news reports of what happened in Canada in 1985.
How familiar are you with food from the Amazon basin region? I wouldn't consider you uncultured for not knowing much about it, but orders of magnitude more people eat food from the Amazon basin than Jamaican food.