One proletarian has the strength of two average proletarians. Does he constitute his own distinct class, as he can leverage that for somewhat higher pay, and therefore eventually become petty bourgeois? No. Again, we can see specialized labor as a substratum, but to confuse it for a class in and of itself goes against the Marxist conception of class.

Now, if you define class as relations of hierarchy, there’s no dissonance, and we can consider managers their own class. But at that point, we have to be careful not to trip over each other’s understanding of class when discussing Marxism vs Anarchism.