^^Basically this, I have also heard he has toned things down, but Dan Patterson has the ability to carry a full conversation underwater with the regulator in his mouth. One person, (lets be honest, a woman) was uncomfortable with Dan's style.
I see. When was it you conducted your comprehensive interview of all of Dan's former students to learn that only one person was uncomfortable with his approach? I would guess it would have taken you quite some time.
I don't want to turn this into a forum on one person, but I do think it is important for people to know that different instructors have different approaches to learning, and they can do a fabulous job with some students but still make other students uncomfortable. I know several people who worked with Dan and were extremely happy with him. I have only been with him for one weekend of cave diving, and he was a wonderful companion on that trip. On the other hand....