Most people who are trying to keep their exploits quiet don't create elaborate websites detailing their activities.
Now there's a valuable addition to the thread.
Does it look to you like this is an elaborate page?
Hmmm... Looks to me like it's a totally simple site that has been set up purely for information purposes, and somewhere for people to access Dave's equipment specifics and dive reports should they feel the need. Shaw didn't have the personality of a braggart or a big talker, a rarity in this industry - something you would know if you read up on him.