Kindler loved lighting bonfires. It brought back memories of a happy childhood with his family when they would go camping and light a campfire and sing songs and tell stories. Kindler was friends with Extinctus, and so eager to please him. Together with the Androids he made bonfires of books which Extinctus wanted to destroy.
One would have thought that those memories of his childhood would have made him remember that books are stories too and last longer than fires. Perhaps someone may point that out to him and he will no longer burn the books.