I think it's worth appreciating the resource constraints under which the Trabant was developed. The questionable technical choices weren't made out of socialist incompetence but because certain materials were hard to come by and practically every citizen was eligible to request one.
While the Western Allies quickly changed their post-war plans to build up Germany as a military base against the Soviet Union for the impending Cold War and the US offered Germany loans for their surplus resources, the Soviet Union initially sought to deindustrialize Germany for reparations to rebuild its own infrastructure that had faced massive destruction by Germany throughout the war.
Additionally unlike the Western Allies, the Soviet Union had only just barely experienced its own industrial revolution and was still largely agrarian until it shifted gears to produce for war. And while an important strategic partner, East Germany spent most of its existence as a puppet state, stuck between producing commodities for its own population, producing export goods that could only be sold at a massive loss and supporting the Soviet side of the Cold War while facing constant provocations from NATO and the US.
In fact, the most valuable "export" for East Germany were West German spies and "collaborators", whom the West German government routinely paid large ransoms for.
EDIT: Deleted the last paragraph speculating about what might have happened if East Germany had continued to exist because that's probably off-topic and requires a more thorough understanding of late East German politics.
EDIT2: To clarify, I'm mostly pointing these things out because the video the parent posted is infuriatingly light on details while just constantly mocking obvious UX or quality issues. The presenter doesn't seem to know much about the car itself and instead tries to give a strained Jeremy Clarkson impression. There's no historical context given (other than "it's a communist car") and it barely even describes any technical aspects other than what would be obvious to any layperson. Contrast this with this Forgotten Weapons video about a horrible mess of a gun that ruined the company that made it: https://www.youtube.com/watch?v=X9bULArrKs4