Food and culture are actually very important to each other, especially in Asian countries with many food-centered traditions and celebrations.
I brought this up because their profile says they love Japan "(apart from the food -shudders-)", and now they say they're even learning the language. There is no excuse for completely wiping out an intrinsic part of their culture.
Go and try more Japanese foods then! It's way more than just sushi. Like I said before, what you have written on your profile is very disrespectful (and yes, you're young because you're a decade younger than me)