If not wanting to live in an enclave as a nominally second-class citizen is racist, then I don't know what to say. Let's not deny reality here, that's really what you end up being if you try to interact with the main racial group in a rural area, or at least the vast majority of them. It doesn't matter what race this happens to be, it's how people work.
I know an Englishman who lives in an Indonesian village (not an enclave). He is constantly reminded that while his presence is cherished, he isn't, and never will be "one of them." He still loves it, though, so there's that.
Most of the tightly closed enclaves are by choice (refugee communities tend to stick together harder than others, from what I can tell). Obviously, not everyone lives in an enclave.
What on earth makes you think they are second class citizens? They vote, attend school board meetings, own homes and live just like anyone else.
As an immigrant, individualist and severe introvert, I'd probably never be "one of them" anywhere anyway, why bother? I suspect that stuff is overrated anyway.
I know an Englishman who lives in an Indonesian village (not an enclave). He is constantly reminded that while his presence is cherished, he isn't, and never will be "one of them." He still loves it, though, so there's that.