When I bought this book a couple of months ago, there were favorable reviews and unfavorable ones--About evenly split. I bought it anyway, to see the controversy first hand. I don't have any personal beef--I'm not one of the offended local businesses, I don't know anyone personally in Moab. And I'd been to Moab with the very same family I took this time.
Reading this book made me think I shouldn't be riding in Moab! Especially not with the kids, even though they were now three years older than when we safely rode there last time. I wanted to cancel the trip after first reading the book. That would have been a mistake.
The author describes most trails other than jeep roads as very dangerous. Instead of telling you if the cliffs and big dropoffs can be seen before you fall off, or can be bypassed, every trail with a cliff is described as too dangerous for kids and intermediate adults. Heck, we just get off and walk the bikes. Yet, I couldn't tell which trails would be safe to take the kids on from the book.
For example, Slickrock Trail is "technically very difficult to extremely dangerous. You shouldn't be out here unless you are an advanced rider." B.S.! (The author defines "advanced" in his book as a very high skill level which most of us will never achieve.) I'm a skilled, middle-aged bike patroller, and my 15-year-old daughter is an athlete who rarely gets on a bike. We rode just part of the main trail because of the heat, but there was nowhere that I got even worried about our safety. Nowhere was there an exposure an experienced rider couldn't see and dismount to avoid. A better guidebook would have told me where to get my kids off their bikes in advance, where not to go because of hidden hazards, and where to just trust my eyes. Because he cries "wolf" so many times, I couldn't tell when to believe the author.
The 4-wheel drive guide book "Guide to Moab, UT Backroads & 4-Wheel Drive Trails" by Charles A. Wells gave better directions to follow for Poison Spider Mesa trail, and for getting around the Moab area. (That book was fun and a reliable guide for a novice 4WD driver with a rental Explorer.)
Nonetheless, Bridgers' book is enjoyable reading. If you tend to be reckless, maybe he'll scare some sense into you. If you normally avoid taking chances with death, you can use a different guidebook whose author is ready to give up the secrets of the trade. If you are so advanced every trail is within your range, you could read this book for kicks, but you wouldn't need it for guidance anyway.
The time for a trail guide to write a book is when he's ready to let go and tell people how to ride without a guide. Bridgers thinks you ought to be hiring a guide instead of reading his book.