I know more than you about pretty much anything, and this topic is one of them. If you knew how mastery works we wouldn't have this conversation.
Most of the times, people with talent accomplish nothing, because they don't like to grind, they quit, much like the gipsy guy in the video, to try to play professionally. If he was playing 1v9 in mouz like niko he would pretty much quit the game.
Niko on the other hand grinded and was on the plateau for a really long time but he didn't give up and overcame this plateau. This is how mastery works, that's why he is the player he is now, not (only) because of his natural talent, natural talent means nothing if you don't want to grind.
Open a book before you talk haha xD