That is a useful training tool. If nothing else it shows that cruiser riders must be the most sensible guys and gals out there (no cruisers in the segment). Of course, the cruiser riders were off-camera sitting at the side of the road in the pub drinking, before jumping on their bikes.
Seriously though. It's interesting the number of 'offs' that were caused by target fixation......look at the tree/other rider/whatever and then proceed to hit it.
It's stuff like this that explains why insurance premiums are so high in places!