I appreciate that Germans are sensitive, Laila, and so are Jews like me.
But I think it's important when you're writing a story about a tyrannical racist regime (and she's been working up to that since book one) to include "registrations" and genaeologies and dispossessions and all the other weapons of such a regime.
I don't think Nazi Germany was the first to invent such tactics, nor will they be the last. So it's important that we remember the tactics, and recognize them for what they are, and are repelled by them wherever we see them.
Being reminded of the latest and best-publicized users of those tactics is an unfortunate side effect, but I don't think it's a slam against Germany in particular. It's just a stark reminder that these ideas are out there, and if we're not in "Constant Vigilance", some politician can slip them by us again.