I have just finished Antifragile and realised the reason why document versus create works.
Usually, the people on TV are blowhards with no skin in the game. Instagram and YouTube vlogs have allowed the doers to document what actually happens rather than an author interpreting what happened after the fact (although there are obviously a lot of people that can teach you how to make money by teaching people how to make money... ad infinitum).
This is the first time this has happened in history. Before, the doers did and the theoreticians pontificated and changed history through retrospective writing.
Just like the famous Theodore Roosevelt quote though, be the one documenting (or creating). Not the one consuming the content.