Nan Tacos the new Japanese TACOS???

The horror! Mexicans always laughs at Americans with their "tacos" who are more like tostadas than tacos, but now Moss burger a big fast food chain in Japan, is selling Nan Tacos, worse enough they don't even have the shape of a taco, they look more like a Mexican dish called "Huarache", whats next? California roll burrito?