So Australia, Canada, and the US are going to be returned to their previous owners? There is zero consistency in these kinds of claims because what is really happening is an influential family with plenty of resources for lawyers is going to grab a shipload of German taxpayer euros using tortured legal arguments.
There are similar claims processes in place for property confiscated by Nazis. Is that also inconsistent?
Taxpayer money was spent on maintaining these properties which is unfortunate but I suppose that that should not prevent rightful heirs from being able to claim property.