Communist/Socialist are very attached to their theoretical world construction. With tons of obscure terms and redefinition of common terms. So that whenever anybody who isn't an expert says anything they can say 'you are wrong because such and such'.

The fact is whenever Communist took over a country, they created mostly the same structure. And its the only form of socialism/communist that existed in a realistic long term setting.

Everything else is just theoretical talking about what true socialism and true communism really are depending on the subculture.