Well, there are some anti-communist tones in the portrayal of the game's setting, but ultimately neither the characters nor the game itself doesn't have much to say about the politics. Its themes are much more personal, and the politics are mentioned only in passing. The DDR aesthetic is a set dressing.
But it does fuck.
Edit: I should also mention that the aesthetics at least partly come from the 1970s DDR sci-fi flick "Signale", which I didn't watch. Maybe they're just the authors channeling their childhoods?
It's a really interesting time period, and it's such a shame that the game turned out to be an utter garbage.