Are culinary exports really "loan words"? Like the whole world calls a fajita a fajita (with various pronunciations), does that make it a loan word and part of the language or are we just using the original name for it? You see what I mean? I'm genuinely asking I have no idea.

I don't know for computer in Japanese but in french it's got it's own word (ordinateur), a good example of this would be "weekend" which is integral part of french vocabulary, that I would call a loan word, not sure about the food stuff though.