The thing is, AES states are democratic. They usually don’t have competing liberal parties like Western countries, but instead a more comprehensive form based on electing delegates. For example, the USSR functioned like this:

For further reading, Soviet Democracy by Pat Sloan.

Further, the “point” of Communism isn’t Democracy to begin with. Communism is a prediction, not a perfect society created in a lab, of what will necessarily happen as humanity develops. Marx predicted humanity will move towards a fully publicly owned and planned economy with democratic control because industry gets larger and more complex over time. I think if you take away that Communism is based on analysis and not on some Utopia, you take away the reason why Communism makes sense to begin with.