I see where you are coming from and when you consider Dr Lorenzo does more-or-less everything himself, you are in a lot of respects getting better value for money than with a lot of other docs, even though on face value, he is really expensive.
Having said that, I don't necessarily agree that doctors need to be present during the whole procedure, or that you will get an inferior result if techs are doing most of the work. I could be mistaken, but I don't think the placement of grafts is rocket science (it is more an art, I guess) that requires seven plus years of medical training required to become a doctor. There are certain parts of the procedure, such as taking the strip, which only the doctor should perform, but the techs are more than capable of implanting the grafts and, in a lot of cases, probably much more experienced at doing this than the doctors themselves. That is why it is important, I think, that clinics disclose and are transparent about their techs qualifications and experience. Most aren't, which is a serious misgiving in my opinion.