I definitely don't think it should have been Kenny, I was hoping someone like Luke with their differences or Carlos, same reason as Luke, or Rebecca because of all he's done to her.
I do have a crazy theory because all Kenny did was hit his face. It did look damaged, but he wasn't stabbed in the brain. He could still be alive but be disordered, which would be funny if he were to return, not being able to see... Or speak... Yeah, he's dead.