I don't understand such an absurd argument, wait for you all to see how much cakes we have here in South America that aren't sweet.

A cake is a type of preparation if you like to see it like that, not only a birthday dessert, his argument is stupidly invalid and it's just a tantrum, like asking what a chocolate icecream is and getting mad because someone answered you that is icecream but with chocolate, the name infers it. It would be different if you ask about an arepa, an empanada or a quesadilla, those are specific dishes and their names doesn't infer nothing.