Why would Stalin have rejected it for communist countries?

Stalin likely rejected the idea of democratization for communist countries because he believed it could undermine the central authority and control essential for maintaining a totalitarian regime. He prioritized the consolidation of power and the protection of the state from perceived threats, both internal and external. Additionally, he viewed the promotion of democracy as a potential challenge to the Marxist-Leninist ideology that justified the existence of a single-party system. Ultimately, he sought to ensure that the communist state remained unchallenged and ideologically pure.