Earlier quoted context omitted.
>Classical Marxism foregrounds class; most of contemporary progressivism foregrounds race, gender and sexuality, I don't see any difference of substance.
The point is if one person is a “Leftist” for whom class is most important and the other is a “Leftist” for whom it takes a back seat to race/gender/sexuality/etc - then the one word (“Leftist”) is being used to mean two different things. What do queer theory, intersectional feminism and critical race theory have in common with Marx, Engels, Lenin, Trotsky, Stalin, Mao, etc? I don’t think they have much in common at…
So no, I don't see any difference of substance. The terminology changes, but the substance remains the same.
Not to mention, the left also still talks about class. Remember the "We are the 99%!" craze?