You clearly are unaware of the millions of non-English words used in everyday language that you mispronounce. Chances are you don't speak English correctly. People who do this are choosing to based on their environment and company in order to appear more cultured. If it were about being culturally sensitive or correct…

What smarmy piece of self-aggrandizing. Real hipster people eat at the Salvadoran restaurant no one's heard of. Chipotle is for suburban posers. Also king of the hill is the best show off the ones listed.

I've worked at Mexican restaurants for 4 years. You're wrong, you can't speak the language and your accent is obviously an attempt to appear intelligent.