Does anyone else think this isn't safe?

I know someone who has one of those. I've seen him use it.

zkx14, The logs weren't spinning because they were on the ground. It was the ground keeping them from spinning, and allowing the screw to thread itself into the log.
If the log is not in contact with the ground, it will spin if the screw threads can get hold of it.

Robert, the guy I know has a safety bar with 2 straps and 4 suction cups on it. It attaches to the side of the vehicle, and surrounds the spike on three sides (top, left, and right). I'm told it's designed to accept up to an 18" wide log up to 28" long, and will act as a safety cage in case you fall forward.

It resembles one of those pickup truck bed extender things that sits in the opened tail gate. It's not as wide, but a little taller. I don't know it that comes with the spike, or if it's an option, or even if it's made by the same manufacture, but it would seem to offer some safety. According to the owner, even it it slips off the car or truck body, it will hit the ground on either side of the spike, before it contacts the spike.
It's made of 1 1/2" tubular aluminum.

I have no clue why "Scott" isn't using that safety bar.
...and Yes, the operator look to be far more dangerous than the tool, as usual. ;roll: