Pure bovine excrement.
Not only are you trying to move the goal posts here, comparing a basic level of intellectual achievement with the highest level feats of athletic prowess is a false analogy.
The subject of the video -and by extension this discussion - is how to write "a song," For Beginners. Not how to write a masterpiece.
Everyone's got to start somewhere. Not even the towering Johann Sebastian Bach wrote the St. Matthew's Passion his first time out.