Oh, I dunno, some of the things he said seemed fairly accurate.
On the other hand, he also said some things that were dead wrong. One notable to me, is that he said they deflated their BCD's to drop into the hole, when in fact what you do is start to add shots of air into your BCD as you drop so as to ensure that you don't plummet to the bottom. The second is that, there are two perfectly lovely dives after the Blue Hole, not one. And if he couldn't figure out a good way to enjoy them, he's not as great a diver as he would make himself out to be.
All that said, I think he writes sarcastically for effect. Seems to have worked.