The article here nicely stresses that there is only one way to communism and that there can even ony be one party. That’s true in theory, but a single party can make a mistake in implementing communism so that it would be a valid option to have various parties each representing one approach to communism among which the population has to choose.
Likewise I think that requiring the destruction of state to establish the dictatorship of the proletariat is a nice theory but in reality, everybody in the state administration is proletarian, if we identify everybody but the billionaires as proletarian. Otherwise, the state would collapse because nobody with an education would be able to participate in the administration.
You argue that there were successful communist revolutions. But those were only starting to implement communism since there hasn’t been a place with communism yet.
My point of view is that there is no need for the dictatorship of the proletariat to create a place for communist relations. A cooperative can be such a place. Instead of having to wait for a revolution, communist and socialists could live in the reality of their preferred relations right now.
Thus it doesn’t matter how many times people failed. People constantly start small businesses. Communists must have the resources to do that, too. Run a restaurant as a cooperative and expand it. This creates the resources to create more advanced cooperatives. Without going full oppressive, the capitalist class cannot do much to prevent such a cooperative.
The problems that will arise will show the real problems of communism. Without an army to suppress dissidents, a cooperative has to deal with those problems. To me, that’s a better way to figure out communism than to wait for a revolution.