cantoresq,
Kastner is well-documented in the book Perfidy by Ben Hechy (who incidentally was a zionist).
Just as Rebi Yochanon ben Zakki saved the Rabbonim in Yavneh, so too here Klal Yisroel needed malachim on the caliber of the Satmar Rebbe to be saved from destruction. The proof is in the pudding. The Satmar Rebbe single-handedly (along with Rav Ahron Kotler) made Torah in America to be what it is today.
According to your warped logic, the Satmar Rebbe should’ve “thanked” Adolf Eichmann for “saving” him. After all, Eichmann approved AND FULLY ARRANGED for the train to me made available for the trip to Switzerland. Without Eichmann, Kastner had nothing. So the logical conclusion of your drivel is that Eichmann is owed a hakoros hatov by the Rebbe.
Of course both Eichmann and Kastner were cold-blooded mass murderers. Whatever purported good either did, had only evil behind it. Kastner received the Vrba-Wetzler report before the Hungarian deportations began, but kept it secret from the Hungarian Jewish community, per his sweetheart agreement with Eichmann, in order not to imperil his sweetheart deal to save his own family’s skin and those of his chosen zionists. Eichmann and Kastner worked hand-in-hand with each others towards their mutual goals. This is who you demand be thanked?!
Like I said, I strongly suggest reading Perfidy, by Ben Hecht.