I don't think it's so much using Earth-terms as brand names. Wine is a generic term across most cultures and while the actual word may vary depending on language, the understanding behind it is the same. Bread is a generic term. Fruit is a generic term.
It's the difference between writing "a fizzy drink" or writing "Coke" or "Pepsi". Or writing "bread" versus "X Brand Bread". I think the issue with tater tots is that it's technically a brand name and a specific cultural thing, and even though "tater" itself is pretty generic slang for potatoes in a lot of places, "tater tots" are a very specific type of food.
That's not to say they couldn't exist in the SW universe - because I imagine they would have some type of fried potato food - and there's nothing explicitly wrong with people enjoying a mention of them in the story or finding them out of place, but I think you're going to make mountains of molehills if you apply this reasoning to all Earth-terms versus brand names or specific cultural dishes.
Re: TFA fics versus other fandom fics
It's the difference between writing "a fizzy drink" or writing "Coke" or "Pepsi". Or writing "bread" versus "X Brand Bread". I think the issue with tater tots is that it's technically a brand name and a specific cultural thing, and even though "tater" itself is pretty generic slang for potatoes in a lot of places, "tater tots" are a very specific type of food.
That's not to say they couldn't exist in the SW universe - because I imagine they would have some type of fried potato food - and there's nothing explicitly wrong with people enjoying a mention of them in the story or finding them out of place, but I think you're going to make mountains of molehills if you apply this reasoning to all Earth-terms versus brand names or specific cultural dishes.