I think you'd have to be quite naive to maintain that the USSR didn't have its local equivalent of a bourgeoisie. Or that a nominally Marxist economy like North Korea isn't really a dynastic monarchy hiding behind Marxist iconography.
A lot of people have opinions on the class structure in the USSR. What is common to most of these people is that they don't understand or use Marx's conception of class, and instead use their own intuitions based off a liberal perspective, and often confusing state function with private power. The USSR was not classless, but it did not have a ruling bourgeoisie-like class (although bourgeois ideology lay latent in society).
I think you'd have to be quite naive to maintain that the USSR didn't have its local equivalent of a bourgeoisie. Or that a nominally Marxist economy like North Korea isn't really a dynastic monarchy hiding behind Marxist iconography.