You didn't do the reading :(. Dictatorship of the proletariat is a concept Marx and Engles adopted. Stalin didn't create it.

I don't know what you think the proletariat taking control of the state is suppose to look like, but there will always be a communist party involved. The mechanisms of power exist to be ruled by a party.

Communist parties should be judged by what they do for their poorest citizens. With that in mind, AES countries are doing a decent job. Things get better when they are in power, and get way worse if they are overthrown