I don't rate biographies, but this one wasn't for me.
Objectively the writing was good, but the title makes it seem like he had left religion and denounces all the hard-line parts of his childhood brainwashing in his parents cult, which in my opinion is not the case. 
I would say he is perhaps less extreme than when he was a younger man, however he is still deeply Christian and several of his chapters were about how he feels abortion is a terrible tragedy (in any form). 
This is a slow paced book, and eye opening but just not the book I thought it was going to be, I found it deeply depressing and deeply worrying.