Ramen is a fairly modern invention that was based around Chinese recipes with American wheat post-war. Its hard to call it a Japanese native food, but that's what we're going with.
Ramen is newer, but definitely is something that the Japanese care about and identify with.
I may be mistaken, but Ramen (as noodles in broth with toppings) strikes me as a fairly obvious dish once you have a kind of noodle and broth.
Ramen specifically uses wheat noodles. "Modern Japanese Ramen" took Chinese recipes that used wheat noddles and used them to great effect during the American occupation with extremely cheap wheat prices (compared to other choice). You can be damn sure without cheap American wheat, Ramen would have stayed as Chinese Soba
It's one of those things that make people uncomfortable because history is messy.
So your history lesson isn't uncomfortable but wrong.
https://en.wikipedia.org/wiki/Food_in_the_Occupation_of_Japa...