The author in the OP (written in 2018 BTW but google scraped by retaxis) is invoking the old "one drop" rule. meaning if you aren't fully white you fall into the "other category" and thus somehow would have viewpoints that are typically non-white.
The Myth of a Majority-Minority America
The narrative that nonwhite people will soon outnumber white people is not only divisive, but also false.
In recent years, demographers and pundits have latched on to the idea that, within a generation,
the United States will inevitably become a majority-minority nation, with nonwhite people outnumbering white people. In the minds of many Americans, this ethno-racial transition betokens political, cultural, and social upheaval, because a white majority has dominated the nation since its founding. But our
research on immigration,
public opinion, and
racial demography reveals something quite different: By softening and blurring racial and ethnic lines, diversity is bringing Americans together more than it is tearing the country apart.
The majority-minority narrative contributes to our national polarization. Its depiction of a society fractured in two, with one side rising while the other subsides, is inherently divisive because it implies winners and losers. It has bolstered white anxiety and
resentment of supposedly ascendant minority groups, and has turned people against democratic institutions that many conservative white Americans and politicians consider complicit in illegitimate minority empowerment. At the extreme, it nurtures
conspiratorial beliefs in a racist “replacement” theory, which holds that elites are working to replace white people with minority immigrants in a “stolen America.”
The narrative is also false. By rigidly splitting Americans into two groups, white versus nonwhite, it reinvents the discredited 19th-century “
one-drop rule” and applies it to a 21st-century society in which the color line is more fluid than it has ever been.
In reality, racial diversity is increasing not only at a nationwide level but also within American families—indeed within individual Americans. Nearly three in 10 Asian, one in four Latino, and one in five Black newlyweds are
married to a member of a different ethnic or racial group. More than three-quarters of these unions are with a white partner. For more and more Americans, racial integration is embedded in their closest relationships.
Multiracial identities are gaining public
recognition and
approval. Numerous young Americans consider themselves both white and members of a minority racial or ethnic group. One in every nine babies born in the U.S. today will be raised in a mixed minority-and-white
family, and this group is steadily growing. These children have kin networks—including grandparents, aunts and uncles, and cousins—that include both white people and minorities. Among Latinos,
identifying as white or as simply “American” is common, and belies the notion that Latinos should be classified monolithically as nonwhite.
Furthermore, most Americans of both white and minority descent are
not positioned as minorities in American society. For example, people who identify as Hispanic and white, or Asian and white, tend to start life in more economically favorable situations than most minority groups, are typically raised in largely white communities, have above-average educational outcomes and adulthood incomes, and frequently marry white people. They have fluid identities that are influenced by both minority and white ancestries.
Children with Black and white parents face greater social exclusion and more formidable obstacles to upward mobility. But their social experiences are more integrated than those of
Black Americans who identify as monoracial.
These trends expose the flaw lurking behind the headline-grabbing claim that America will soon be a majority-minority society. That narrative depends on the misleading practice of classifying individuals of mixed backgrounds as exclusively nonwhite. The Census Bureau population projections that relied on this practice first predicted the majority-minority future in 2008. The idea quickly took on a life of its own. Some Americans now instinctively
think of rising diversity as a catalyst of white decline and nonwhite numerical dominance. But as more
recent news releases from the bureau have begun to acknowledge, what the data in fact show is that Americans with mixed racial backgrounds are the most rapidly growing racial group in the country.