I am not sure what it is about scuba that has so many people wanted to create and enforce rules and control. I think we can all agree to some basic "shoulds": dive within your training and in accordance with any personal limitations, dive a plan appropriate to your gas and equipment...I really don't understand the thrill some people seem to get out of trying to assert control over how or whether other people dive.
IMHO, people who try to force rules and controls on other people feel out of control themselves, and they feel better by attempting to control others. If one has to sneer at others choice to participate in a religion of their choosing, they are saying more about themselves than other people. People who try to bully others into looking a certain way, acting a certain way and believing a certain way have my deepest sympathy for their pathetic little lives. Not saying that the OP is one of these people, but the posts certainly take on a flavor of wanting to control the masses. IJS.