Techs do a lot of the critically important work in both FUT and FUE at the vast majority of clinics. The best clinics have highly skilled techs that are a very talented part of the team. In both of my surgeries, both the Dr. and the techs were very involved with what seemed to me to be appropriate roles. I knew that going in and I was fine with it. I do think it is important to learn about the techs at a clinic as they are an integral part of the success of the best surgeons. It is all about being informed and comfortable not only with the surgeon you choose, but the clinic as a whole. I don't know if there is really a right or wrong answer here, but knowledge going in is key.