"If it's not Hogarthian, it's not right. If you're not doing it right, don't do it at all."
I wasn't around (as a diver) back then, I did do a quick google search for the article that you are referring to, and took a quick look at it, and I agreed with a lot of it, right up until the last sentence, which you quoted
Perhaps, it was the correct statement back then (not sure when sidemount came about). However, it was probably short sighted on GI3s part to make this statement, since everything evolves.