What enabled the dictatorship was punishing people for perceived disloyalty and shooting people who tried to leave. Privacy was, at best, a weak defence against that, and arguably much of the Stasi's raison d'etre was to convince citizens their concerns about the government ought to stay private.

Better a Germany where people feel safe to share far more on social media than the Stasi could ever have collected, because they don't expect to suffer consequences from doing so.