One of the first things I learned in law school was never to trust second-hand reports to tell you what a law says. Section 1864.3 just says cash transactions must be reported, it doesn't "prohibit cash" or anything of the sort,

It's bad when Jenny McCarthy and Oprah use "success" from the placebo effect to cast doubt on science-based medicine. This doubt helps other scam artists sell expensive water to a patient who could be cured by real medicine.

If you control your DNS, you can also blackhole Tynt's servers

Do you really want a bunch of inexperienced divers with no bouyancy control
slamming into natural reefs & kicking up silt?

Aside from being something different to see, wrecks make good training sites for all
sorts of skills.

As an added bonus they have a commercial/tourist value that helps
make providing and improving marine habitat more affordable.

The thing is 100 feet tall, so the top of the structure will start at 40ft. There will be plenty to see without deco stops and tri-mix.

The ethics rules/courts tend to weigh heavily on the side of protecting the "client"

It's probably not reasonable, in most cases, to expect a forum
poster is your attorney, but there is no reason why you can't
create an attorney-client relationship on an online forum.

If someone makes a claim, the "reasonableness" test is a point that will end up in litigation. By clearly stating that you are not their lawyer, you are hoping to make it so unlikely the plaintiff will will, they won't bother to file in the first place. (Or, if they do, you can easily get the claim dismissed.)

Your example is an obvious extreme, no one has any reason to
assume you are a lawyer and the "advice" is very general. That does not mean you can't craft a post that would truly be problematic.

Oh yea... IAAL BNYL