I had a similar thought a while ago. If the goal of the terrorists was to shake the system in such a way it destroyed (or seriously harmed) itself, that goal was achieved. I believe the authoritarian ICE deportations without due process are essentially the imperial boomerang of the Guantanamo Bay-style human right abuses that followed 9/11.

In human history stretching the homelands rules beyond recognition when acting abroad has rarely turned out well for the homeland in the long run.