Im going to open up this post by saying i made the often common in the internet mistake of using "white" when what i meant was "White american", that was stupid of me, and yes, i do believe there is at least the following in my blood as a Mexican: Native, African, Spaniard and Jewish.
And yes, you're right, although i have experienced some racism from americans via the way my voice sounds (having worked before in customer service for the USA companies that outsource grunt call center work to mexico) or the way i was denied my visa by some asshole who thought just because im mexican i was obviously trying to sneak and steal their jobs (literally denied because "i couldn't prove i would want to go back to mexico", for fucks sake!!), it's true that i will never fully experience the full horror of the bigotry minorities suffer in the USA, much less specially now that the president himself emboldens these assholes.
But i want to ask you seriously, how can you compare the damage "some white girls making burritos" supposedly do mexican culture to all the other horrible, horrible things you listed? It's ridiculous to equate those things or to claim that it's not "right" for mexican food to be normalized until the USA fixes all this shit, they are issues that are in such different levels that i don't even begin to comprehend how anybody could even worry about "white people making burritos" when much bigger injustices are being done.