“Queso” is short for “chili con queso” which is a specific Tex-Mex thing. News flash: when you go to a Mexican place in the USofA, chances are it’s not “GEEN-U-WINE” Mexican food but some localization of Tex-Mex or southwestern Mexican-influenced food. One you leave the American Southwest and Texas, most “Mexican food” places are kinda trash. Like with Cajun food, some styles of food and cooking just haven’t migrated throughout the country well enough yet. I got dragged to a Cajun place in DC and it was a very depressing experience, especially considering the bill. “Blackened” on the east coast apparently means “lightly seasoned”.
Most authentic Mexican food can be pretty nasty/flavorless unless you grew up eating that stuff. Even some delicacies, such as menudo and lengua, can be disgusting when it’s made by people who don’t know what they’re doing.