I have worked in California, Virginia, and Germany, and I've seen racist contexts in all these locations. East vs West Germany: Yes, perhaps the east is somewhat more opposed to outsiders, but only in the country side - cities like Dresden, Berlin, Leipzig are similarly diverse as are West German cities. And if you go to a rural area in Bavaria, you'll find (former) Pegida as well. It is just not as simple as the generalizations made by you and others.

In the end, when it comes down to a decision, you need something simple: Yes or No. Yes, I move there, or No, I don't move there. As a person of color, and if you have a choice, the answer is NO (I also wouldn't recommend rural Bavaria, but Munich is fine).