Arty!! It's been a long time, girl!! How are things?
The reason this book is so controversial is that it questions the foundationof the Catholic faith by questioning Jesus' divinity and making Jesus human rather than God. Also, it charges the Catholic church with corruption and suppression of truths about Jesus and his early followers.
But, yeah, the author acknowledges that it isn't factual. Still, I guess the concern is that people will begin to question...
Relax... I'll need some information first. Just the basic facts - can you show me where it hurts?