“That used to be true many years ago, but now that all the big German companies are putting up new factories in the former German Democratic Republic.”
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From everything I’ve seen, it’s still pretty hard hit now and is considered a tad “second class”:
https://www.youtube.com/watch?v=d8WfEGegn6k
https://www.youtube.com/watch?v=i9vRsWIN-kI
https://www.washingtonpost.com/news/worldviews/wp/2014/10/31/the-berlin-wall-fell-25-years-ago-but-germany-is-still-divided/
It depends on where in the former GDR. Leipzig is booming because both Volkswagen and BMW have set up major production facilities there, along with a booming reconstruction of the historic old town.