I did ask about the risk of this being a distraction. Dr. Ponce said no, because he actually had to glance up and to the right to see the projected virtual image. There were plenty of times during the procedure when he was busy and so ignored it.
Remember that using cameras and monitors in the operating room to provide magnification or a better view of the area where the surgeon is working is not a new thing -- there are some procedures where this is essential. So being able to glance at a video image to get additional info, beyond what can be seen with the naked eye, is something many surgeons already have practice doing.