Maybe the last 500 years of Atlanticist colonialism has something to do with it.
And also maybe the CIA: Imperialist Propaganda and the Ideology of the Western Left Intelligentsia: From Anticommunism and Identity Politics to Democratic Illusions and Fascism

In this regard, the Frankfurt School under Horkheimer played a foundational role in the establishment of what is known as Western Marxism, and more specifically Cultural Marxism. Figures like Horkheimer and his lifelong collaborator Theodor Adorno not only rejected actually existing socialism, but they directly identified it with fascism by benightedly relying—very much like French theory—on the ideological category of totalitarianism. Embracing a highly intellectualized and melodramatic version of what would later become known as TINA (“There Is No Alternative”), they focused on the realm of bourgeois art and culture as perhaps the only potential site of salvation. This is because thinkers like Adorno and Horkheimer, with a few exceptions, were largely idealist in their theoretical practice: if meaningful social change was foreclosed in the practical world, deliverance was to be sought in the geistig—meaning intellectual and spiritual—realm of novel thought-forms and innovative bourgeois culture.

[…]

Finally, the evolution of the Frankfurt School into its second (Jürgen Habermas) and third generations (Axel Honneth, Nancy Fraser, Seyla Benhabib, and so on) did not alter in the least its anticommunist orientation. On the contrary, Habermas explicitly claimed that state socialism was bankrupt and argued for creating space within the capitalist system and its purportedly democratic institutions for the ideal of an inclusive “procedure of discursive will-formation.” The neo-Habermasians of the third generation have continued this orientation.