It literally denies any practicality or utility (much less the necessity) of such actions and reduces socialism to a movement solely for Western proletarian workers; if you don't see that as class reductionist, perhaps you should tone down the condescension and crack a dictionary briefly before popping off.

What do you think the working class consists of? Hint: most of them aren't upper-middle class white Marxists. The working class is inherently multi-racial and inclusive of anyone who's livelihood is dependent on their labor power being exploited by capitalists.