I was thinking along the lines of training progression. It's not just about physical ability in my opinion. For something like controlling how the ball goes between your legs etc. (like he mentions in the video) you need to at least have intermediate proficiency in ball handling. I think for the average player, it's best to focus on basics such as looking up while handling the ball and having a varied skill set (making sure you are shooting with a high percentage, good footwork etc.) before thinking about efficiency from a micro standpoint.