It is a good video to show how horrible some folks drive, and how some are just too bold. The one where the driver was distracted and started coasting forward at the STOP and hit the car in front happened to me - luckily I had my trailer hitch inserted and it didn't damage my car at all....but it did poke a hole in his BMW!
I occasionally watch scooter crash videos, as they help me to remember what not to do. Most of the crashes result from the riders going too fast to allow them to take evasive maneuvers - or they pop out of blind spots where the other riders/drivers couldn't see them. Watching the video helps me to know not to speed around slower cars at intersections where other drivers could turn in front of me.
A lot of the falls show the scooter riders don't have a good understanding of how to use the front brake - they lock it up, the bars turn, and they fall down.
https://www.youtube.com/watch?v=do_Qblm_DlI