There's no internal logic to this one. The book is about how burning the Bible (and other books) is a bad thing. Which is something the Bible itself also says.
This is just an another example of someone who fears what they don't understand. His philosophy is not to learn and grow, but to force the world to conform to his limited understanding. Because doing otherwise would admit that he's not always right, and people different from himself have value.
What's to investigate? Seriously, what about this anti-book burning work is there to investigate? This is a level of sheer wilfully blind ignorance and stupidity that I honestly never thought possible.