It's a complex question.

Many in our elite class really do believe this stuff. They live lives where they are sheltered from the reality of race, and in fact, may work in careers where they encounter people of other races who really are just as intelligent as they are, because high-IQ careers filter out low-performing members of every race. They often have closer relationships across race with members of their own class and intellectual cohort than they do with members of their own race.

Add to this that elites are likely to travel more and have more epicurean appetites for novelty; that they may need cheap servants, housecleaners, and employees for their own businesses; and the crude and repellent way many lower-class Whites talk about race, dropping n-bombs and posting A. Wyatt Mann cartoons, that signals race itself as a lower-class concept.

There's a comment I read in a blog entry once that really sums up this elite white attitude:

It's not about race anymore, it's about class. I'm white, and my wife is Mexican. We are both college graduates, and unlike most of the people here we are certainly not trash. Lower class whites (the rednecks on this forum) are threatened by the other races rising up the socioeconomic food chain. If you are uneducated, crass, and racist you are white trash. I'll take my sophisticated Latina over a fat piece of trailer trash any day. Upper class whites are not threatened by other races. The uneducated, unskilled laborer that watches 8 hours of TV everyday is.

This random comment on the web has really stuck with me as being the crux of the threat facing Whites today. Elite lowercase whites have utter contempt for the very concept of race, and think it no longer matters.

Of course, this is stupid and selfish.

Whatever he gains personally from marrying high-caste members of the outgroup, his society loses from marrying the low-caste members. And a raceblind society will end up importing some very low-caste members indeed.

Even upper-middle-class white racemixers will still be trapped in the declining chaos of the raceblind society they've created. The high-trust, high-empathy, high-creativity qualities that typify homogeneously White societies will be destroyed. Elite racemixing for personal gain is like eating your seed corn, or burning your furniture for firewood. No one wants to live in the aftermath of that.

But this story of elite whites sacrificing their ethnic communities' prosperity and safety for their own personal gain is at least as old as plantation slavery, the original "diversity is our greatest strength". (And elite jews, who intuitively see their ethnic solidarity as a source of great power, and white solidarity as their greatest threat, have always been happy to nurture and reinforce hyper-individualist racial self-loathing in white elites.)