You're right, Too little thought, too much mouth. But... I still see little to no advantage to it,over adjusting each cylinder individually. You still have to adjust 16 valves, and its the adjusting that takes the time, not the turning over the motor. jmho Also unless the motor was shut off at top dead center compression stroke #1 or 6 cylinder you are going to have turn the motor to that before beginning anyway. I just don't get it, but I'm old and stuborn!
ops: And, if you're doing it to keep assembly lube on the cam lobes, wont most of it be wiped off by the time you get the valves adjusted anyway?