I generally chalk it up to two things.... one.... Although there are lots of latinos in the US, "queso" could still be considered one of those exotic ingredients that evoke all sorts of "mystique" for many meat and potato americans. (I could be completely wrong, but still a possibility) To say you're regularly consuming something exotic helps to elevate yourself and is something that happens in all cultures.

The second thing is not necessarily a flavour profile. It could be a texture thing... a smell thing... Something that affects your other senses. Personally, for me it depends on if it goes with what I'm cooking. For example, I like ground beef tacos with a sharp cheddar. But I wouldn't feel the same about putting shredded cheddar on a fish taco..I might put queso on a pork carnitas taco... Try it and if it's good for you, go for it.... if not, move to the next one....