As someone who manages a SCUBA blog that publishes 1-2 times a day, the biggest fault I see in this article is not having the disclaimer that the article is for informational purposes only and additional training is required at the beginning and again in the middle of the article.
Our writer knows dive gear, destinations, marine life, marine news, and basic skills very well, but shes not an instructor, cave diver, or working through tech training like I am, so I directly oversee the training articles. If its something like 3 easy tips to clear your mask more quickly, its unlikely we need a disclaimer. If its more technical oriented, I make sure she always includes the disclaimer at least at the beginning and end.
Regardless of disclaimers or articles published online, there will always be divers who dont think they need training and can do advanced diving just by reading a book/blog post/article. While I make sure the disclaimer is there so people are less likely to hurt themselves, in all honesty a big part of the disclaimer is so no one can say, I hurt myself on this dive but I followed all of the directions in the article on Aquaviews!
I just started my TDI Advanced Nitrox then will be going into Deco Procedures, but were doing it all without computers which may be harder, but it makes much more sense to me to learn it that way. I dont know if thats required by TDI or my instructors choice, nor do I know if other agencies actually allow only computer-based deco learning, so I dont really know if this article goes against all training standards.