So it's okay to silence this segment of the Jewish population, and deny them citizenship rights in Germany (of all places) if they are "seen as weirdos among other Jews"?
This is just a rare edge case I guess it is worth ignoring it.
The local decree is in clear violation of Articles 1 and 5 of the Grundgesetz in any case. Which was specifically designed to prevent bullying of sort.
In particular there's this notion of Meinungsfreiheit ("freedom of thought" essentially) as an explicitly protected right, which you might want to look into.
Also on the topic of Antisemitism I " trust " the local Jewish organisations and their opinion more than some stranger on HN.