I’m not confused. I have traveled throughout Mexico since the early 70s; I was there as recently as last March when I made my fourth visit to the Copper Canyon at Divisadero Barrancas in the state of Chihuahua. And while I’ve never stopped to count the times I have heard that phrase I can safely estimate it to be well in the dozens. And yes, they do like our dollars. But they don’t like them enough to not show their disdain for the wealthy northern neighbors when given the chance.
Saw more anti-Americanism in Italy and in Venezuela.
Then again, I will admit that Mexicans don't exactly care for folks that are darker than them.