He is definitely very good since going at such speeds in tight traffic where all sorts of permutations and probabilities can occur, such as a car veering or a side mirror that is jutting out a tad bit, requires a very high degree of skill. Otherwise he would have crashed the first time he tried to make that video. Most motorcyclists wouldn't be able to even make one video like that even if they wanted to. He is a great rider. However, he is also foolish since there are so many other factors operating beyond his control. All it needs is for a car to veer onto him, or some rubble on the road, or any number of events that can happen and in the process convert that cyclist into a human cannonball. Every single car he passes at that speed is an exercise in cumulative arithmetic progression (maybe even geometric progression), and his control over many of those factors is very limited no matter how good he is.
There was also another rider (dressed all in black, European but not Russian) who used to do similar stuff. This chap however would race on highways, and he used to bait cops. I believe his videos were titled 'ghost rider' or something like that. I also wonder what happened to that guy.
*Reckless drivers expect and depend upon others to drive legal.