My guess is it’s because they are closer to Russia. Western Germany is further away. Get it?

What’s behind eastern Germans’ empathy for Russia? – For decades, many in former East Germany felt closer to Russia than their western compatriots. But opposition to Russia’s war on Ukraine now outweighs historical grievances about the West…

East Germans’ residual suspicion of the West and sympathy for Russia are visible in plenty of surveys, especially those that date from before the Russian invasion of Ukraine. A survey carried out by pollster Forsa in July 2021 found that 50% of eastern Germans would have liked Germany to have closer ties with Russia, compared to only 25% of western Germans.