However, the known record of German institutions cracking down on dissident Jewish voices(*) is a very good indicator of what's going on here. Now, I'm not saying that any of these people are little saints, or that they did nothing questionable, but that there is a systemic bias in Germany against pro-Palestinian activism. Which is the more burning point than counting pennies of the particularities of each individual legal case.
(*) such as Masha Gessen, Nancy Fraser, Yuval Abraham, Omri Boehm and others.
I'm sure there are civil engineers out there who can figure this out. Not worth sacrificing anyone's rights or safety for it.