Eldo delivers!!! ha ha. thanks for NYT link too.
THe Irish Mexican thing has a personal angle. I had a violinist in my band, an American girl, who lived in Mexico and started an Irish band. Then she moved to Ireland to go to college and started a mariachi band. There is a persistent connection going back to 19th century with the San Patricio Battalion who fought in Mexico.
But it still would seem weird to get a burrito there. OTOH, I had Mexi food in Berlin, at the Cafe Dolores, which was a complete lift from Mission Street. Pro-tip: the chips just sucked. They just weren't right.