Even many of the dishes that did without a doubt originate in what are now California, the Southwest, or Texas aren't "fake" either
And no, I'm not talking about any of the shit from Taco Bell, Chipotle, or Aqui. Those I do consider to be fake Mexican, not because of where they were founded, but because the founders of those restaurants were fucking gringos who whitewashed my culture's cuisine for profit
I'm talking about dishes like chicken and olive enchiladas. No olives aren't used in Jalisco or Oaxaca or Veracruz etc., but something I've learned while trying to learn about the history of Mexican cuisine in the so-called Western United States is that the use of olives is traditional to Chicano cuisine. We were already using olives (and flour tortillas) in our cuisine before the gringos ever stepped foot here
There's also something to be said about how a lot of times when people talk about "real"/"authentic"/"traditional" Mexican cuisine they're really mostly just referring to the cuisine of the Western, Central, and Southern regions of Mexico (something I myself have been guilty of as someone who grew up on Jalisciense cuisine). Norteño and Chicano cuisine often get excluded
