That therapist has, in my opinion, theorised a bit too far there. Jamie explained that he has to redraw most lines 3-5 times and the therapist concluded that he works 3-5 times as hard as some people. How can she come to that conclusion? What if most people have to redraw lines 5-7 times? Jamie would then be working half as hard as some people.
The therapist has no other data to compare what is a usual amount of line redraws. I think the therapist has speculated a bit far without any proof or even a cursory investigation, yet she seems able to comment. I wouldn't go to any therapist that feels it ok to come to a conclusion without checking out the data.
However Jack says that everything she cooks, she cooks right first time, so how does she relate to rubbing out and starting over 3-5 times? Most recipe creators take many many times to perfect their recipes. Hence Jack works far less than most people, surely.