Class Is Different From All Other Axes Of Oppression

Class is a material difference based on a social relation, and to abolish the social relation one must abolish the material difference.

All other axes of oppression are social relations based on (often vague and always arbitrary) material differences.  One can leave the material difference alone when abolishing these (e.g. you don’t need to abolish people having different skin tones to abolish to social relation of race)

Which I think is why you can have like men who are genuinely committed to anti-sexism and can be trusted, but no bourgeois is a true comrade.  This is also why international working class sympathy and solidarity is crucial (with the most privileged members of the working class needing to be the ones who aren’t shitty before they can expect help from the rest of us)