Actually, it's a common insight that applies in many circumstances. We didn't leave the Nazi regime intact, did we? Did we put Nazis back in charge of West Germany? Or did we deem the Nazi government to be unreformable and required that it be purged? What about Japan? Did we reform their monarchy?
Companies regularly sell underperforming divisions because they realize they can't fix them. They unload them where they can be merged into another organization, or at least let someone else reform them.
It really is amazing how you manage to stake out positions on virtually every topic that are not only wrong, not only obviously wrong, but in fact incomprehensible to people with any semblance of life experience.
However, it doesn't take any faith at all to believe that a person who is uncomfortable in a terrorist country where he and his are disliked might be a better fit in a democracy than the dregs of a group most highly privileged in a society.