^^^
Funny thing is, on the track, where it counts, guys like that are usually very slow. See, it doesn't take much talent to ride around on the streets fast, just a whole lot of ignoring the environment.
I use to ride in the canyons, but I use to get my ass kicked by my friends. Eventually my friends all started going to the track and I was many seconds a lap faster on a piece of junk antique Ducati. Eventually they went faster, but all the bad rider traits they had built up over the years, were very hard to break. They all eventually gave up track riding because they never saw any progress. Eventually one by one, they stopped riding because of getting injured or dying in the canyons. I stopped riding in the canyons when I started going to trackdays and only go on occasion to enjoy being on 2 wheels, not go fast.
It took me a few months of riding and eventually racing, to figure out how to ride on the track, it wasn't easy. But once you understand the basics, its very easy to translate those into riding on the street, if you can ignore the environment. The problem is, you have to go very fast in order to keep your tires hot enough, so you can carry the proper lean angle, so you CAN use those "track" skills on the street. The guys in the first part of the video above, picked a very fast/flowing section of road which I know very well. Its very residential, cars pulling in and out of driveways, lots of bicyclists and stopped vehicles on the road. To do what those guys were doing, doesn't take talent, it doesn't take brains, it just takes stupidity.