Rationalize if you must, I will not.
It's simple logic and the facts. Not hyperbole and rationalization.
I view your statements as "eye for a eye" rationalization. As if somehow, he should die for what others did, only because he supports what was done.
We could execute many college professors with that logic.
There must be a solid link of actions and intent before you can execute someone for a crime. In this case, he was only a wannabee terrorist and the proper thing to do is to remove him from society in perpetuity.
This is what they did.