The Majority Culture?

Recently, someone recognized as a diversity “expert” made the statement, “the majority culture is defined as white, male, heterosexual, Christian and not having an ADA-defined disability.” In this context, majority culture refers to those with more power and privilege, those who are perceived as the “norm.”
What stands out to me, first and foremost, is that social class is not part of this list, even though we are talking about power, be it economic, social, and/or political. Too often we assume that a culture of privilege exists based simply on race, gender, and/or other dimensions of diversity.
Moreover, this definition of majority culture ignores other key determinants of power, such as age, language, ethnicity, and gender identity. Even a category such as physical attractiveness, which has been found to be related to power, might be something to consider. Given the breadth and inclusiveness of diversity, any attempt to define majority culture by listing a number of privileged groups is bound to be incomplete and inaccurate. Are the growing number of well-educated, well-connected Latino males in the U.S. part of the majority or minority culture? What about the increasing number of older white males who possess a skill set for which there is limited demand?
Dimensions of diversity are interconnected, according to intersection theory Therefore, we cannot simply isolate on race or even a number of factors, without understanding their interrelationships, and their collective impact on who is “at the center” and who is marginalized in a given environment.
If we use the term majority and minority, we have to be careful. Implying that someone does or does not have power because of the sum total of their statuses is a potential “hot button” for many, and rightly so.