I think that Maisel is assuming a certain level of involvement and experience.
I agree. My primary creative "foundation" is music. I've played, studied, been involved in music since before I can remember (my mother is a phenomenal musician that introduced me to it at an early age). I've watched hours of interviews with musicians and performers talking in much the same vein as Maisel in this video and there's always an assumed level of experience and ability. You can't tell someone that's just picking up a guitar to just "___insert whatever piece of advice here___" if they don't understand how the guitar works, how to make a note and how the strings, pick/fingers, etc. work together to create music. The problem is that so many creative individuals come across interviews like this, assume it's talking to them as a newbie, and start sharing art (in whatever form) that's not good. COUNTLESS videos on YouTube support this.
In order to apply the advice of an accomplished artist (in whichever medium you choose) you have to have a working knowledge of the technical aspects of that particular art. People approaching a video like this one without having a level of involvement and experience behind the camera are going to go out and create substandard photos. They may stumble upon the occasional one that people like but they aren't going to know why and their consistency in capturing something meaningful is going to be random at best.