No. It's just a theory of history that can discussed, debated, even argued about. The right-wingers issue list after list of Words That Must Not Be Spoken, from "slavery" to "abortion" to "diversity," and beyond, and then complain about "cancel culture." It involves only discussions of people's actions, and most of those people are dead anyway. Theories are meant to be discussed. This is not a matter of launching an insulting diatribe against living people just because of their race, sex, sexual orientation, religion, ethnicity, etc.