Yes, that is awful. However, the article has it wrong. If a rope is caught in a disc chipper, it will wrap around the axle of the disc, and keep getting sucked in, faster as it wraps further from the center of the axle. Reversing the feedwheels will have no effect, as the rope is too small to be stopped by the feed wheels.
Further, as soon as it starts getting wrapped up, it is now no longer being fed in at 70-120 feet per minute rate of most of today's chippers, but at the speed of the disc.