For clarity, I'm stretching the useage of Chauvinism here. While you're correct that Lenin is referring to imperialists dressing their imperialism in leftist garb, Chauvinism, in general, is any kind of belief in the superiority of one's group over another.

OP clearly thinks they're better then the queers and our supposed bourgeois decadence.

I think leftists can have a little word play, as a treat