Scenario - a pilot, aged over 76, has over 900 hours total flight time, less than 7 in this particular make/model (high performance) aircraft ( it was a rental I believe) A friend of mine (also a pilot with 1500+ hours) was recently offered to be right seat to this individual for a breakfast flight and told me afterwards never again, not once did the PIC use a checklist and boasted that with his 900+ hours he really didn’t need to, it was all “up here” !! My friend said it was the scariest flight he has ever been on and would never fly again with the PIC, not only did the PIC not use a checklist but often the PIC was getting behind the plane. Sounds to me that the PIC 900+ hours has made them very complacent and that never ends well. I don’t know the PIC personally but I suspect he would not take any feedback well.